----------
20190226

開啟啟動紀錄 /log:
"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe" /log 
"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe" ChangeToSQL.sln /log ChangeToSQL.xml
會將啟動過程記錄到:
%APPDATA%\Microsoft\VisualStudio\<版本>\ActivityLog.xml
或
C:\Users\[YourUserName]\AppData\Roaming\Microsoft\VisualStudio\14.0\ChangeToSQL.xml


清除 cache:
C:\Users\[yourname]\AppData\Roaming\Microsoft\VisualStudio\14.0
C:\Users\[yourname]\AppData\Local\Microsoft\VisualStudio\14.0
ASP.NET:
C:\Users\[yourname]\AppData\Local\Temp\Temporary ASP.NET Files\root\23f0790b\8c49ea6f\assembly\dl3\cc9baf6c\3e830111_b5d1d401\LibSQL.dll

%APPDATA% = C:\Users\[yourname]\AppData\Roaming
%userprofile% = C:\Users\[yourname]\

----------
1. Close all instances of VS
2. delete everything in this 2 folders as below cache:
C:\Users\<your users name>\AppData\Local\Microsoft\VisualStudio\14.0 
C:\Users\<your users name>\AppData\Roaming\Microsoft\VisualStudio\14.0
3. Restart VS 2015