Re: Netbackup 7.5.0.6 client & Windows Server 2012R2

Please confirm the exact NBU version that you are trying to install.
7.5 base version does not support W2012.
There is a special 7.5.0.6 download for this OS.

PS :
Are you aware that all versions up to 7.6.x are running out of support by the end of January?

From tech note:

https://www.veritas.com/support/en_US/article.000014301

Have a look in this folder:

C:\ProgramData\Symantec\NetBackup\InstallLogs

...for the client install log file.  Look through this file for any errors.

And then try reading through some/most/all of the posts found with this search:

https://www.veritas.com/content/support/en_US/search-results.html?product=&keyword=C%253A%255CProgramData%255CSymantec%255CNetBackup%255CInstallLogs