Project could not be opened because the Visual C# 2019

Question

Hello, On a newly installed Windows server 2016 with Visual studio 2019 I get the following error: Project (name) could not be opened because the Visual C# 2019 compiler could not be created. Unspecified error (Exception from HRESULT: 0x80004005 (E_FAIL)). Does anyone know what this error is about and how it can be fixed? Thanks!

Madan Shekar · Answer

For this particular issue, I searched some solutions below, hope they will helpful: 1. Go to Control Panel -> Programs and Features -> Turn Windows Features on or off, inside that, we had to select Internet Information Services -> Web Management Tools -> IIS 6 Management Compatibility -> IIS Metabse and IIS 6 configuration compatibility. 2. Edit the web application’s project file with a text editor and change this line from True to False: True 3. Grant IIS AppPool identity permissions to the %systemroot%\inetsrv\config 4.Run in command prompt: aspnet_regiis –i or aspnet_regiis.exe –ga If the above doesn’t work, please use the devenv /log to start visual studio and log all activity to the log file. You can get the log file at: %APPDATA%\Microsoft\VisualStudio\Version\ActivityLog.xml, open it in the IE to see whether there are errors. Refer to: https://msdn.microsoft.com/en-us/library/xee0c8y7.aspx?f=255&MSPPError=-2147217396