Solution to We Couldn't Complete The Updates Undoing changes' Issue on Windows 10- Boot your system into Safe Mode by selecting Change defaults. If you have any corrupted files in your system, it may affect your updates and cause such issues . Below is the solution on it

1. Press the Win + R keys to open the Run box and type services.msc in it and then press the Enter key. 2. Go to the App Readiness service and then double click on it to open its Properties. 3. Then set Automatic as the Startup type and click the Start button to enable this service. 4. Now, click on the Apply button and then OK to execute this change.

Once you are done with the above steps, restart your computer to check if this problem is fixed. Once the repairing process is completed, you may get rid of this problem.