Hi @Harry Sauers,
Depending on the version of Windows you're using, you can access the list of installed updates in several ways.
Locate the list of installed updates
For Windows Server 2016, Windows 10, and later versions:
- Open the Start menu, and type
update history
. - Select View update history from the search results.
- Select Uninstall updates.
For older versions of Windows, navigate to Control Panel > Programs and Features > View installed updates.
Remove the Cumulative Update
Depending on the version of Windows you're using, you can remove the CU from the list of installed updates by either selecting the Uninstall option next to the update, or by right-clicking on the update and selecting Uninstall.
Follow the instructions to remove the CU. You may be prompted to restart your computer after the CU is removed.
Do not forget to back up before doing that.
See Uninstall a Cumulative Update from SQL Server
Regards,
Zoe Hui
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