Windows error 0x80090020, -2146893792

SignTool internal error with cert by SimplySign App from Certum(0x80090020)

I get a Ev Code sign in Cloud from Certum. And with the SimplySign app, I do not need to get the USB disk. But when sign with the cert, An error occurs: SignTool.exe sign /ac "Certum Trusted Network CA.crt" /sha1 afdd9e4c718b41fb7981ee32c55837035bdb9abe /t http://time.certum.pl /fd sha256 /v dmfs.sys The following [...] read more

httpClient.SendAsync throws Unspecified GSS failure

I am using .NET Core 3.1 Here is a code that I am using: CredentialCache credentialCache = new CredentialCache(); credentialCache.Add(new Uri(URL), "NEGOTIATE", new NetworkCredential(USER, PASSWORD, DOMAIN)); using (HttpClientHandler handler = new HttpClientHandler()) { handler.Credentials = credentialCache; using (HttpClient httpClient = new HttpClient(handler)) { HttpRequestMessage request = new HttpRequestMessage(new HttpMethod("GET"), REQUEST_URL); [...] read more

Cannot Create Master Hash on Win 8.1

Using the Microsoft recommended procedures to create a Master Hash: http://msdn.microsoft.com/en-us/library/windows/desktop/aa381960%28v=vs.85%29.aspx I have successfully developed a TLS program that works like a charm on Win Vista and Win 7. Unfortunately, it fails on Win 8.1 with the call: CryptCreateHash(hProv, CALG_SCHANNEL_MASTER_HASH, hMasterKey, 0, &hMasterHash); returning an error 0x80090020. Acquiring the context [...] read more

System.net.mail.SmtpClient fails to send mail from server having NTLM authentication

.Net Core version: 3.1 Server: Linux(Ubuntu 18.04 LTS) Issue Our use case is to send Email to customers using SMTP server. This SMTP server is configured with NTLM as authentication mechanism. When we make use of default "System.net.mail.SmtpClient" package in .NetCore, it fails to even create a successful connection. And [...] read more

How can i get System.Net.Mail.Smtp work on linux enviroment?

So, i'm developing an Web API on .NET Core 3.1 that should run on a linux server (CentOS 8) and i need to send transactional e-mails from it. But the first time i ran the app, when i my API tries to send an e-mail via my company SMTP server [...] read more

Using TFS Rest API works from curl but not from client dotnet library

I'm using the following code from the library Microsoft.VisualStudio.Services.Client: var credential = new VssBasicCredential("", "<PAT>"); var url = "<url>""; using var vssConnection = new VssConnection(new Uri(url), credential); await vssConnection.ConnectAsync(); It fails with the following exception, which I assume has to do with server not allowing basic auth: System.ComponentModel.Win32Exception (0x80090020): GSSAPI [...] read more

CAPICOM dll not working in x64 bit server

I am using CAPICOM dll in my project for certificate generation. On my local machine that is 32 bit sysatem it is working fine but on server where I host my application that is 64 bit server machine it gives 0x80090020 error. As my local machine I register CAPICOM.dll with [...] read more