Hi;
I got this error today while using Visual Studio . When I got this error while trying to create a Biztalk project in Visual Studio, I realized that there was a problem with sln files. To solve this problem, we open
Regedit .(Start-Run-Regedit)
32 bit VisualStudio : HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio9.0Projects{FAE04EC0-301F-11d3-BF4B-00C04F79EFBC>PossibleProjectExtensions
For 64-bit VisualStudio : HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio9.0Projects{FAE04EC0-301F-11d3-BF4B-00C04F79EFBC}PossibleProject /strong>
Which infrastructure you are using, you find the one that suits it. We add the btproj value under this path. Of course, if there is a previous record here, we separate it with a semicolon.