It worked for me. But when I ran the script (.\1.ps1) the first time it didn't ask what backup directory. So, after it was done running it asked Yes or No to proceed but was not backing up to C:\2 it was backing up to C:1. So, I did not type Y or N, instead I typed in C:\2 and it went back to command PS C:. Then I typed in .\1.ps1 hit enter and it asked for Backup Directory, I put in C:\2. It did its thing but did not ask me to reboot. I closed everything out & restarted my computer. It took a while to restart. Once restarted I checked updates, and it still showed an error. I clicked retry & it worked my system is up to date.
Not sure if this will happen to everyone but just in case, I thought I would share my experience.