After upgrading my laptop's version of Windows 10 form 1803 to 1809 recently I discovered that the WSUS administration tool from RSAT was missing. The .msc file was actually still present but it wouldn't run.
I considered downloading RSAT again, since that's how I had initially installed the various RSAT tools a few years ago, but found on this Microsoft page new instructions:
"Starting with Windows 10 October 2018 Update, RSAT is included as a set of "Features on Demand" right from Windows 10. Do not download an RSAT package from this page. Instead, just go to "Manage optional features" in Settings and click "Add a feature" to see the list of available RSAT tools. Select and install the specific RSAT tools you need. To see installation progress, click the Back button to view status on the "Manage optional features" page."
Seems easy enough, but it didn't work. The install failed every time with the error message: "Install failed. Contact your administrator to get this feature."
I searched for the error message and found this helpful blog post with the following instructions:
- Disable WSUS by setting HKLM/Software/Policies/Microsoft/Windows/WindowsUpdate/AU/ to 0
- Restart the Windows Update service
- Install again
This article doesn't mention reverting the registry change, but I think that's probably warranted. Now it's back to mucking with WSUS!
UPDATE: This appears to affect other RSAT components as well. The Group Policy Management Console gpmc.msc was also missing. The same fix applied, so this isn't exclusive to the WSUS RSAT component.
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