Visual Studio 2015: The hash value is not correct

问题:

After installing Visual Studio Professional 2015 (using an RTM executable but selecting Update 2 during the setup process), I get the following warning:

Everything seems to work fine, and all resources I can find online refer to errors thrown by the installer of earlier versions of Visual Studio. These, however, are only warnings.

Do I need to do anything or can I ignore them safely?

回答1:

I got the same "Hash value incorrect" error issue when i was trying to install Visual Studio 2015 Enterprise from a shared location. It got solved for me, when its installation started from from the local copy of the folder.

I.e. I have copied the setup files/packages into local drive and initiated.

回答2:

In my case, it was because my internet was restricted. I had to download off-line copies of Visual Studio for SQL and SSDT. The instructions below, however, are for Visual Studio 2017.

1. Download: https://go.microsoft.com/fwlink/?LinkId=866452
2. SSDT-Setup-ENU.exe /layout <folder name>
3. Download: https://aka.ms/vs/15/release/vs_sql.exe
4. vs_SQL.exe --layout <different folder name> (this takes a while, it's laying out ~4 GB)
5. <different folder name>\vs_setup.exe --wait --nickname "SSDT" --passive
6. <folder name>\SSDT-Setup-ENU.exe

Notes: For #2, yes it's "15" even though you're downloading Visual Studio 17. I think it ha to do with Visual Studio 2017 being at version 15 and Visual Studio 2015 being at version 17.

References:

• Visual Studio 2017 SSDT offline install
• https://social.msdn.microsoft.com/Forums/en-US/5c41001f-7d93-4318-96c7-75fa3c416605/offline-installer-for-ssdt-2017?forum=ssdt
• https://docs.microsoft.com/en-us/sql/ssdt/download-sql-server-data-tools-ssdt