ERROR_SXS_ASSEMBLY_MISSING
Had an issue recently trying to add the IIS feature on a Windows 2019 server. Adding it would fail with error 0x80073701. C:\Windows\Logs\CBS\CBS.log had the following: CBS Failed to pin deployment while resolving Update: Package_2949_for_KB4538461~31bf3856ad364e35~amd64~~10.0.1.7.4538461-4917_neutral from file: (null) [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING] Google turned up some good articles like the one below: https://thatonecomputerguy.wordpress.com/2015/10/06/windows-update-fails-with-error-code-0x80073701-error_sxs_assembly_missing-solved/ Cool. So I’ll just download that update from the Windows update catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=KB4538461 Sad face. What I ended up doing was running setup.exe from a Windows 2019 installer ISO and basically doing an in place upgrade to the same version. After the “upgrade” I was able to add the feature without issue. I probably also could have deleted all the reg entries that referenc...