in my library I found these answers:
As you have mentioned that you are getting "Error U44M1I210 when installing updates" and you have also tried all the basic troubleshooting steps, i would recommend you to try the troubleshooting steps given in the following thread and share the results with us: When you will remove this damn update error? (U44m1l200).
In that case I would request you to Contact Customer Care as technical troubleshooting might be required.
My Lightroom is not the app it is the full software version.