Windows Server 2012+ and net-framework-core package installation error (unable to locate source files)


I have faced a problem with net-Framework-core package installation. As you probably know, this package is deprecated, but still available, when you specify source. It can be installed by command

Add-WindowsFeature net-Framework-core -Sources <path to Windows Server 2012 installation media>\Sources\SxS

If that doesnt work, you should check several things:

  • Is the installation media from the same build as current OS (should be)
  • Isnt it corrupted
  • Sometimes it is helpful to map installation media on another server and use UNC path instead of local
  • In my case problem was in Windows Update Services setting. The registry key stated, no automatic update is possible and WUS is used for updates.

Solution: Locate registry key below, change value to “0” and install net Framework core feature. After done, change back to “1” – if still no go, change value to 0 and reboot server prior to install.

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU]

“UseWUServer”=dword:00000001

“NoAutoUpdate”=dword:00000001

 

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