So, you trying to install .NET Framework 3.5 Feature on Server Manager with add roles and features on a Windows Server. I have seen this error on a Windows Server 2019 Datacenter. I need .NET Framework 2.0 and hence tried to install the .NET Framework 3.5 where both .NET 2.0 and 3.0 is included.
The added features are only the .NET Framework 3.5 Features.
The installation doesn’t get far
Before it hit the error: The request to add or remove features on the specified server failed. Installation of one or more roles, role services, or features failed. Error: 0x800f0954
The way I got around it was disabled the Windows Server Update Services WSUS while doing the installation.
- Open Registry Editor: Run regedit in Run
2. Go to
3. Right click the UseWUServer and set the Data to zero
4. Restart the server and install the .NET Framework 3.5 Features with success