Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) in visual studio


Am a newbie to windows 10 uwp having migrated from wpf applications. I know this question has been asked before but none has been able to solve my problem. Recently, I attempted recreating the Hamburger menu for a uwp application I am creating by following the instructions on a GitHub page.

Everything was going on well till I encountered the error "Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) ". After debugging, I realized the following line of code caused the error

<Setter Property="BorderBrush" Value="{x:Null}" /> 

Just to explain the project from the GitHub page; assuming you have a blank uwp xaml page, you have to add 2 files shell.xaml and shell.xaml.cs to your project as well as modifying the app.xaml. Further instructions are on the Github page. I added this but after running this I encountered the error.

I also tried the instructions from here but to no avail. Am quite confused with the explanation because I could not find the COMPONENTS as described on the page.

Please any suggestion will be helpful.

asked on Stack Overflow Mar 19, 2016 by Tolani • edited Jan 30, 2021 by Shayan Shafiq

2 Answers


I encountered this Error: Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) in Visual Studio 2017 when just changing the Solution Configuration from Debug to Release.

Fortunately, reopening Visual Studio eliminate this error.

answered on Stack Overflow Feb 21, 2020 by mr NAE

Seems various causes lead to this error: in Visual Studio 2019 Community Edition (Studio Version 16.5.3) I added a Windows Form to an existing project, named it including the ending .cs - did not like that at all. I was not able to save the project, neither that specific file nor the project but was confronted with the 'catastrophic error...'. Luckly copy/past to Visual studio 2017 and past into newly added, blank form (that worked smoothly!) although the same problem occurred until I added the new form without suffix .cs!

answered on Stack Overflow May 22, 2020 by Andy3D

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