Error 0x800F0954 Installing .NET Framework 3.5 on Windows 2019

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Option 1: Bypass WSUS (temporarily)

To fix the problem, temporarily bypass WSUS server using the registry.

  1. Type regedit.exe and click OK
  2. Go to the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
  3. Edit the value UseWUServer and set it 0
  4. Restart Windows
  5. Install .NET via server manager.
  6. Change registry and set the value UseWUServer to 0

Option 2 : Install .NET framework via the *.ISO file

  1. Mount the ISO image.
  2. Open an elevated command prompt
  3. enter the command :

    DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:F:sources/sxs
  4. .NET should install.
More info about DISM can be found here :
https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-capabilities-package-servicing-command-line-options

			

    
    
    



					



	
			

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