Windows error 0x8002801D, -2147319779

Outlook 2007 from C# - COM exception, TYPE_E_LIBNOTREGISTERED

I'm trying to make a program that would open new Outlook 2007 message. I've referenced from COM tab Microsoft Outlook 12.0 ObjectLibrary. These items showed up in references in VS: Microsoft.Office.Core Microsoft.Office.Inerop.Outlook Now I try to invoke following code: var _outlookInstance = new Microsoft.Office.Interop.Outlook.Application(); var _message = (OutlookApp.MailItem)_outlookInstance.CreateItem(OutlookApp.OlItemType.olMailItem); where OutlookApp==Microsoft.Office.Interop.Outlook [...] read more

Installshield Build Automation

I have seen many solutions for automating my InstallShield build, but I am having issues with each one. I am using InstallShield Professional 2013. Sorry for the lengthy question, but I am clueless on which direction to go to solve my issues. 1) IsCmdBld.exe - I have a script that [...] read more

Unable to cast COM object of type 'Microsoft.Office.Interop.PowerPoint.ApplicationClass'

> Unable to cast COM object of type > 'Microsoft.Office.Interop.PowerPoint.ApplicationClass' to interface type > 'Microsoft.Office.Interop.PowerPoint._Application'. This operation failed > because the QueryInterface call on the COM component for the interface with > IID '{91493442-5A91-11CF-8700-00AA0060263B}' failed due to the following > error: Library not registered. (Exception from HRESULT: 0x8002801D > (TYPE_E_LIBNOTREGISTERED)). [...] read more

"Could not parse configuration file..." when I add EF6 to a solution

I get an error when I add EF6 to a solution. I think it also happens when I update the model from the database. The error shows up in the Output window right after I add EF: "Could not parse the configuration file. The error message is: 'Library not registered. [...] read more

Office Primary Interop Assemblies not working after installing 2007 compatibility pack

I had a C# program that did some Word & Excel automation and it used Office 2003 Primary Interop Assemblies. The way I deployed it was by including the Interops in the bin and I had my program reference it from there as opposed to referencing it from the GAC [...] read more

Unable to add any nuget package in vs 2017

Am trying to add nuget package prism.core in vs 2017 and target framework is 4.6.1,its giving this error > Severity Code Description Project File Line Suppression State Error Failed to > add reference to 'Microsoft.Practices.ServiceLocation'. Library not > registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED) tried to install newtonsoft.json package, got [...] read more

Error with existing COM Reference or adding a new one

Let me preface this by saying that I am unfamiliar with COM references, and I am using VS2010 on a Windows 7 64 bit machine. This morning I pulled down an existing project from TFS. I then tried to build the project and received this error: > The type or [...] read more

Visual studio, build failed with no errors

I have a project in visual studio 2013 that worked well. At the last rebuild (with no changes) it failed and I didn't got errors. I tried to restart everything and even build a new project with no luck. I reinstalled my VS2013 and nothing... :( when I changed the [...] read more

RubberDuck Parse Error on Initial Refresh

I installed RubberDuck and opened an Access 2007 Database I use as a code testing ground. When I click Refresh on the RD toolbar, the text continued to say Pending. After several click on the refresh button I open Settings and unchecked/Rechecked a random checkbox and clicked Ok. At that [...] read more

Operation failed, QueryInterface call on the COM component for the interface with IID failed due to Library not registered

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.IO; using Excel = Microsoft.Office.Interop.Excel; namespace GridComplete { public partial class Form1 : Form { private static Excel.Workbook MyBook; private static Excel.Application MyApp; private static Excel.Worksheet MySheet; private void bRun_Click(object sender, [...] read more

Calling COM object from STA thread cause TYPE_E_LIBNOTREGISTERED on some machines

I am developing Word shared add-in, using COM shim wizard. http://blogs.msdn.com/b/mshneer/archive/2010/03/19/com-shim-wizards-for-vs-2010.aspx Everything worked fine until I tried to use some threads. It fail on some machines with TYPE_E_LIBNOTREGISTERED exception for COM-object created in main thread. I have a Word document object (_doc) from some Word event and try to use [...] read more

Unable to cast COM object of type System.__ComObject to IRibbonUI. IID 00c03a7-0000-0000-c000-000000000046 TYPE_E_LIBNOTREGISTERED 0x8002801d

After applying Microsoft .NET patches or upgrade and then subsequent downgrade of Microsoft Office, I am getting an error: Unable to cast COM object of type System.__ComObject to IRibbonUI. IID 00c03a7-0000-0000-c000-000000000046 Library not registered TYPE_E_LIBNOTREGISTERED 0x8002801d in an error window of Invantive Control when starting Microsoft Excel 2010. A similar [...] read more

Team Foundation Server unable to build. Missing libraries or components?

I am trying to create a build using TFS and a build server. This is my first attempt with the build server and it is not going well!! I am using Visual Studio 2012 and TFS 2012. The project is written in VB.Net and uses a fair number of references. [...] read more

Com Error while integrating vs 2012 C# with visio 2007

I am trying to integrate Visio 2007 with C# (VS 2012 and windows 7 OS) but I am getting error while running the code Unable to cast COM object of type 'Microsoft.Office.Interop.Visio.ApplicationClass' to interface type 'Microsoft.Office.Interop.Visio.IVApplication'. This operation failed because the QueryInterface call on the COM component for the interface [...] read more

InteropServices.COMException on Access.DoCMD.RunSQL error

I wrote a little program in Visual Studio 2010 to open an Access database, enter a value into a table, and open a form. Pretty simple, and the program works great on my laptop. The problem arises when I try and run the exe on a second PC. I cannot [...] read more

Library not registered

I got this error : > Warning 1 Cannot get the file path for type library > "a5ededf4-2bbc-45f3-822b-e60c278a1a79" version 12.0. Library not > registered. (Exception from HRESULT: 0x8002801D > (TYPE_E_LIBNOTREGISTERED)) OCRMongo In vb.net I follow instruction from http://www.techrepublic.com/forum/questions/101-345154/how-do-i-install-microsoft-modi-110 and I still get that warning. What's the problem? read more

Error creating package in SSIS 2008 "Library not registered"

Dears, in SSIS 2008 when I try to create new package I get following error : Error creating package Failed to save package file "C:\Users\Mehdi\AppData\Local\Temp\tmpA99D.tmp" with error 0x8002801D "Library not registered. I registered both MSXML4.dll and MSXML6.dll but I still have problem. read more

cannot deploy web app from github to azure

I am using GitHub for Azure. Suddenly, Azure stopped deploying from GitHub. It was working fine before. Below is the error i am getting now. > Command: "D:\home\site\deployments\tools\deploy.cmd" Handling .NET Web > Application deployment. MSBuild auto-detection: using msbuild version '14.0' > from 'D:\Program Files (x86)\MSBuild\14.0\bin'. Restoring NuGet package > DotNetZip.1.10.1. [...] read more

can I get powershell to properly copy multiline text like Bash in Ubuntu does?

I use an Ubuntu VM at home for Rails development and I've gotten a bit spoiled by Bash. When I copy multiline text from Bash, it seems like it's pretty good about knowing that text is single line or multiline when I copy it. In Powershell (hosted in Console2) on [...] read more

Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)

I have a PC with MS Office 2010 installed while the MS Outlook is installed from Office 2007. On this PC the below code: Microsoft.Office.Interop.Outlook.Application myOutlook = new Microsoft.Office.Interop.Outlook.Application(); string theName = myOutlook.Name; results into the below exception: > Unable to cast COM object of type > 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface [...] read more

C#: some of machines are throwing following error: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass'

I had created a C# function which saves DataGridView to Excel which works well on most of machines. However, some of machines are throwing following error: Microsoft.Office.Interop.Excel._Application. This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{000208D5-0000-0000-C000-000000000046}’ failed due to the following error: [...] read more

Microsoft office web Components not working with Visual Studio 2012

I am using Visual studio 2012 & creating a VB.Net Windows Forms Application whereas i am trying use microsoft office web components to embed an excel sheet into the form. I have installed, Office web components 11. while selecting the Microsoft office spread sheet 11.0 Item it says following error [...] read more

Excel Library not registered

I have a newly-bought laptop. I installed it with Visual Studio 2013, Office 2013, and Project 2013. However, when I run my app, I have an error message: > {"Unable to cast COM object of type > 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type > 'Microsoft.Office.Interop.Excel._Application'. This operation failed because > the QueryInterface [...] read more

Add digital signature to word document using C#

I'm building an application for adding digital signature to word file, for that i'm using below code. private void CreateNewPage() { object missing = System.Reflection.Missing.Value; object fileName = @"F:\Doc\test.docx"; object readOnly = false; object isVisible = true; //Start Word and open a document. Microsoft.Office.Interop.Word._Application oWord; Microsoft.Office.Interop.Word._Document oDoc; oWord = new [...] read more

LabVIEW Report Generation returns error code (-2147319779) when downgraded from MS Office 365 to Office 2013

I am using LabVIEW 2018 32 bit version. In our LabVIEW application, we use Excel Report Generation functions. It was developed with Office 365 installed. Now I want to use Office 2013 for the Report Generation instead of O365. The report generated fine with Office 365. I downgraded my system [...] read more

Library issues with Visual Studio

I'm trying to build a project with Visual Studio and I get the following two errors: C:\secrets\Microsoft.Common.CurrentVersion.targets(2545,5): warning MSB3284: Cannot get the file path for type library "00020813-0000-0000-c000-000000000046" version 1.9. Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)) C:\secrets\Microsoft.Common.CurrentVersion.targets(2545,5): warning MSB3283: Cannot find wrapper assembly for type library "VBIDE". Verify [...] read more

"Library not registered" error, can I determine which one exactly?

In C++ add-in for Outlook, I'm now getting "Library not registered" error. This add-in worked for ages on this machine but somehow things got broken now (although it still works fine on other machines). Is there any way to find out which particular library is missing (not registered) without reinstalling [...] read more

Errors using GAC_MSIL assemblies on VSTS

I have an ASP web form Project stored in VSTS, and I am trying to build it. Suddenly I got this error in the build section: 2017-04-18T22:01:20.3859517Z Build FAILED. 2017-04-18T22:01:20.3859517Z 2017-04-18T22:01:20.3869498Z "d:\a\1\s\WebTimeSheet.sln" (default target) (1) -> 2017-04-18T22:01:20.3869498Z "d:\a\1\s\WebTimeSheet\WebTimeSheet.csproj" (default target) (2) -> 2017-04-18T22:01:20.3869498Z (ResolveComReferences target) -> 2017-04-18T22:01:20.3869498Z C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(2399,5): [...] read more

C# An unhandled exception of type 'System.InvalidCastException'

I'm trying to compile a existing C# project using visual Studio 2015. It compiles good, but runtime getting following error: > An unhandled exception of type 'System.InvalidCastException' occurred in > MemoryManager.exe > > Additional information: Unable to cast COM object of type > 'mscomctl.ToolbarClass' to interface type 'mscomctl.IToolbar'. This operation [...] read more

Library is not registered on new project

Good morning. I've searched over the web and Microsoft's documentantion and didn't see any matches for the same error. When I click New Project, on Visual Studio 2015, I receive the following error: Library is not registered. (Exception from HTRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)) There are evidences that the error may be [...] read more

.NET RTD/COM Excel Interop errors on one user's machine?

We built a .NET COM/Excel RTD Server (.NET Assembly) which has been in use for many years, on a variety of machines (i.e. we know it works, and our standard method for installing it works). We have a user who installed this RTD component on a different machine, and is [...] read more

Visual Studio Package (vsix) - Team City without Visual Studio installed

I'm creating a Visual Studio Package (vsix) (shameless plug: pMixins ) and I want to build the vsix package using the TeamCity continuous integration server. TeamCity uses MSBuild in the background. I am comfortable installing the Visual Studio SDK on my build agent, but I do not want to install [...] read more

Exceptions from Excel API after downgrading from 2013 to 2010

After downgrading from Excel 2013 to 2010 (i.e. removing 2013 and installing 2010) when I try to access the Excel OM from my add-in like this: if (this.Application.ActiveWorkbook == null) { return; } I get the following Exception: > Unable to cast COM object of type 'System.__ComObject' to interface type [...] read more

Excel Interop - Type not registered

I have an C# winform app compiled for x86 platform, using excel 2003 COM interop libraries. The Visual studio project references the following interop files for office 2003) Microsoft.Office.Interop.Excel.dll (v 11.0.0, specific version = true) Microsoft.Vbe.Interop.dll (v 11.0.0, specific version = false) This application runs fine on most computers with [...] read more

SourceControl2 GetBindings returns Library not registered

I have a add-in that works in vs2008 and vs2010. It connects to the TFS 2010 and takes information (SourceControlBindings class) about file using its local path The code is very simple: var sc = app.DTE.SourceControl as SourceControl2; and later static SourceControlBindings GetBinding(SourceControl2 sc, string fileName) { return sc.GetBindings(fileName); } [...] read more

Error in Opening the Excel file from C#.Net (VS2010)

I am trying to open an excel file (.xlsx) using C# (VS2010 professional) code. I am getting an (untraceable, to me) exception when executing/single stepping the last 2 lines of the below code. Below mentioned is my code for opening an existing excel file. string tesfile = "C:\\Users\\AWaheed3\\Desktop\\1.xlsx"; Microsoft.Office.Interop.Excel.Application xlApp; [...] read more

Executing DTS Package from C# error Unable to cast COM object of type 'Microsoft.SqlServer.Dts.Runtime.Wrapper.ApplicationClass'

I am working on a Console application where I am executing a SSIS package from c#. Below is my code for the execution private bool ExecutePackage(int _sid, int _pid, int _envid, string _connection, int _scheduleId) { bool isSuccess = false; try { var dtPackagePath = HandlerFunctions.GetPackageInformation(_sid, _pid, _envid); var DtsxPath [...] read more

Calling Word method Application.ComAddins crashes after downgrading from Office 2013 to Office 2010

Some of our clients downgraded from Office 2013 to Office 2010. After doing that if you call the Application property ComAddins you get the following exception: System.Runtime.InteropServices.COMException (0x8002801D): Library not registered. (Excepción de HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)) at Microsoft.Office.Interop.Word.ApplicationClass.get_COMAddIns() at our own code We have tried to reinstall Office doing different [...] read more

Can you include a COM object in a package so that it will publish successfully from MSBUILD on a computer without that DLL installed?

Our situation is that we have built a MS Outlook 365 COM Add-In, and we are trying to publish it using Jenkins. We are able to build it successfully on commit using msbuild, but in trying to publish it we get the following error: warning MSB3284: Cannot get the file [...] read more

Issue with Microsoft.Office.Interop.Word with Office 2010 with Visual studio 2015

I am working on a requirement to read the word document and populate data into Datatable or excel sheet using C# code. I am using Visual Studio 2015 and Office 2016 in my machine. In my solution I have added the references Microsoft Word 16.0 Object Library to work with [...] read more

"Cannot get the file path for type library" trying to use OCX in .NET

I am rewriting an old VB6 application in c# on a Win10Pro64bit computer. The VB6 app uses an OCX called IMAGinE. I am able to add the control to the ToolBox. When I do, it adds two references: AxIMAGINELib and IMAGINELib. The IMAGINELib references has the little yellow triangle signifying [...] read more

DLL / Typelib / COM

I have a C++ DLL which holds COM code. When trying to access the interface with VBA code, I am getting these error messages: atlTraceCOM - ERROR : Unable to load Typelibrary. (HRESULT = 0x8002801d) atlTraceCOM - Verify TypelibID and major version specified with atlTraceCOM - IDispatchImpl, CStockPropImpl, IProvideClassInfoImpl or [...] read more

How to fix the exception, when I call new Microsoft.Office.Interop.Word.Application()

When I call new Microsoft.Office.Interop.Word.Application() to initialize, an error occurred. The message is as follows: > Unable to cast COM object of type > 'Microsoft.Office.Interop.Word.ApplicationClass' to interface type > 'Microsoft.Office.Interop.Word._Application'. This operation failed because > the QueryInterface call on the COM component for the interface with IID > '{00020970-0000-0000-C000-000000000046}' failed [...] read more

DevOps - Process 'msbuild.exe' exited with code '1' in continuous integration build

I have a continuous build task in Azure DevOps which builds the solution whenever code is pushed to repository. So my code is building and running fine on my local machine, but when it tries to build in devOps, this error comes, "Process 'msbuild.exe' exited with code '1'". and build [...] read more

Why do I get System Exception thrown only with Excel 2007?

I have a List that holds some objects, which properties I want to write in a en Excel. The code works perfectly with Excel 2013. The issue comes when I try to run it in a computer that only has Excel 2007. I already looked in different links and discussions [...] read more

How to kick off ExtendScript JSX script from Powershell

I want to be able to execute an Adobe Illustrator ExtendScript via Windows Powershell. I believe this should be possible due to this answer that describes using VB via COM. This is my Powershell script: $illustratorRef = New-Object -ComObject Illustrator.Application $conversionScript = New-Object -ComObject Scripting.FileSystemObject $scriptFile = $conversionScript.OpenTextFile("C:\ws\ArtConversion\alert-test.jsx") $fileContents = [...] read more

Having an issue with exporting DataGridView to excel receiving Com Error

I have had code working in an C# .net 2013. that exports the DGV to excel. However it has stopped working as of this morning, its been about a month since I have opened the code. Now I am getting an error: > Additional information: unable to cast COM object [...] read more

PowerDesigner COM object is empty on Windows Server 2012

We have a problem when scripting PowerDesigner on Windows Server 2012. We don't have problems on Windows 10 and Windows 7 (we tried it on several machines). We are starting PowerDesigner from PowerShell like this: $PowerDesigner = New-Object -com powerdesigner.application Add-Type -path “C:\Program Files (x86)\Sybase\PowerDesigner 16\Interop.PdCommon.dll” Add-Type -path “C:\Program Files [...] read more

SQL Server library not registered. (exception from hresult: 0x8002801d (type_e_libnotregistered))

Trying to open my stored procedure through new query window in SQL Server 2012 but I get an error: > Library not registered. (exception from hresult: 0x8002801d > (type_e_libnotregistered)) Error screenshot: screenshot of the error I tried to solve through below given solution on by Microsoft but still its not [...] read more

How can I get a program working with missing references?

I've got the code for project written with a vb.net, .net Framework 2.0, Windows Form Application. I'm trying to get it working in Visual Studio 2015. When I open it up, I'm missing several references. I try to compile (Clean/Rebuild) it, and get multiple errors. I've looked up the files [...] read more

Can't launch outlook in visual studio through TFS add-in

I am using visual studio 2013 with Team foundation Server add-in. Opening up a TFS task/bug item, there is a outlook icon button, which allow me to open up outlook new email with the TFS item title. my visual studio runs in administrator mode. I have two office versions installed [...] read more

VS2013 Cant Install almost anything through NUget (specially requiring entityframework)

I can't install Entity Framework via Nuget on Visual Studio 2013 Ultimate. I've tried: * reinstalling it * update it (vs2013) patch5 * .net frameworks fixer (FixDotNet2017.cab) * other nugets versions * EFTools6.1.3ForVS2013.msi * msxml6_SDK.msi * repairing w/ MSXML * dotNetFx45_Full_setup.exe I've wasted a whole week on this - but [...] read more

VSTO Outlook Add-In : TYPE_E_LIBNOTREGISTERED

we have a add-in in Outlook (VSTO) installed in an environment which has Outlook 2013 and Skype 2013. It has been working successfully until we migrated Skype for Business to version 2016. Ever since, whenever we try to read anything from the "ContactItem" class (we actually only need a custom [...] read more

off-site build of C# / COM solution possible?

I work on an integration server and now I would like to build a C#.NET 4.5 solution which refers to a COM library. The COM object is NOT installed on the CI machine. I have a .tlb file at hand. I have already created the .dll using tlbimp.exe and included [...] read more

Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Core.IRibbonUI'

Hi I am new to excel addin. i had installed microsoft office 2010 and my addin used to work perfectly. To verify in 2013 i had installed 2013 and was running both version 2010 and 2013. Recently i installed 2013 and now if i open 2010 version my addin loads [...] read more

Unable to load excel file using Microsoft.Office > interop.Excel

In my WPF application I am using Microsoft.Office.Interop.Excel to import data from excel file. I have been using this code for last couple of months and it has been working just fine for me. Today all of a sudden when I ran the utility I got the following error. > [...] read more

System.InvalidCastException with outlook application

I use this code to access to our outlook DB and retrieve the logged in user: Outlook.Application oApp = null; if (System.Diagnostics.Process.GetProcessesByName("OUTLOOK").Count() > 0) { oApp = Marshal.GetActiveObject("Outlook.Application") as Outlook.Application; } else oApp = new Outlook.Application(); Outlook.NameSpace oNS = oApp.GetNamespace("mapi"); oNS.Logon("Default Outlook Profile", "", false, true); // using the default [...] read more

Error while Embedding Excel sheet into VB.Net Form using Microsoft office spread sheet

I am using Visual studio 2012 & creating a VB.Net Windows Forms Application whereas i am trying to embed an excel sheet data into the form. I have installed, Office web components 11. while dragging and dropping the Microsoft office spread sheet Item it says following error > Failed to [...] read more

How to use redistributable PIA 2010 to create excel application on machine which doesn't have MS Office client installed

From last couple of days I'm struggling with redistributable PIA 2010. Actually I have created one excel application locally, which uses 2007 PIA (I have also MS Office installed on my machine). This application was working fine, now I have installed the 2010 PIA and register it's Microsoft.Office.Interop.Excel dll then [...] read more

Outlook Interop exception - displaying new mailitem

Trying to automatically generate a mail message via Outlook - Added a reference to Microsoft.Office.Interop.Outlook 14.0.0.0 It works on a Win 8/Office 2013 PC, but fails with the following exception on Win 7/Office 2010. Code: Application outlookApp = new Application(); MailItem message = (MailItem)outlookApp.CreateItem(OlItemType.olMailItem); message.Subject = "subject"; message.Display(message); message.HTMLBody = [...] read more

TYPE_E_LIBNOTREGISTERED(Library not registered) while call Invoke() of unregistered ActiveX control?

Code as below. How to avoid the TYPE_E_LIBNOTREGISTERED(hr=0x8002801D, Library not registered) error(DO NOT register the ActiveX to Windows) of disp->Invoke()? When register the ActiveX control, all is OK, but I want not register to WINDOWS. Thanks! #define WIN32_LEAN_AND_MEAN #include <tchar.h> #include <Windows.h> #include <assert.h> #include <stdio.h> #include <ole2.h> int APIENTRY [...] read more

Problems referencing com dlls in vs 2010

I'm running a 32 bit ver of win7 in a vm. I am trying to reference 5 com dlls (VB6) in my .net project. These dlls (and their dependencies) are registered ok since I can use them natively as they form a part of another app and that app is [...] read more

How do I properly register the Type Library of A VB.NET COM+ Component?

I am looking to upgrade legacy VB6 COM+ components to VB.NET components. I have seemingly upgraded one already, called EventPackage, which has one class, IEventListener. Another, TradeOrders, Implements EventPackage.IEventListener. When attempting to build TradeOrders, I get the following Errors/Warnings; 1. Cannot load type library for reference "EventPackage". Library not registered. [...] read more

Unable to compile .NET application with referenced TLB when library is not registered

I have a C# 4.0 application that is referencing a type library from a C++ application. This is used for some secure COM interop, a question I originally had asked here. On my development machine this second application is installed so I can compile without any issues. If I attempt [...] read more

Why I can't create COM object in .NET but can in JavaScript

I can create an ActiveX in JS (html is opend by IE): var o = new ActiveXObject("MyProgId"); But I can't create its instance in .NET: var t = Type.GetTypeFromProgId("MyProgId"); returns null. When I try to add "reference to COM" in VS I get such error: "Could not add a reference [...] read more

COM Outlook addin ribbon buttons not responding in Korean Outlook 2010

I have a COM Outlook addin which implements a ribbon button in Outlook 2010. It's been working just fine for quite some time. Until someone tried to load the addin in the Korean version of Outlook. The ribbon buttons show up but do not do anything when clicked. In the [...] read more

InvalidCastException in VSTO add-in

I'm experiencing a bit weird problem with VSTO Outlook add-in I'm developing. It works fine on a bunch of machines but in one it throws an InvalidCastException and cannot find the reason why. I've checked that all prerequisites are installed on this machine (the installer doest it by itself but [...] read more