Photoshop Elements 14 Update Failure U44M1I210 on Windows 11 Resolved
I just installed Photoshop Elements 14 on a new Windows 11 Pro desktop. The download file from account.adobe.com/products was for the original release, 14.0.
Shortly after installation a window popped up advising that updates for Photoshop Elements (to 14.1) and Adobe Camera Raw (to 9.5) were available. The ACR update installed successfully.
The 14.1 update failed with error code U44M1I210. This attempt was in a standard account and the appropriate user account control permission to change the system had been granted. It continued to fail even after restarting Windows.
A search for the error code found a support article from 2018 for Adobe Creative Cloud and Creative Suite CS6 (https://helpx.adobe.com/creative-suite/kb/error-u44m1i210-installing-updates-ccm.html), that suggested five solutions, the first of which was to install the update using an administrator account. A post on another bulletin board suggested this article was valid for more than the stated products. The update using an administrator account worked.
Another support article for unspecified products from this year (https://helpx.adobe.com/creative-cloud/kb/update-error-u44m1i216.html), but apparently somewhat dated as it refers only to Windows XP, Vista, 7 and 8, suggests deleting the updater folder. I don't know whether this would work because the update using the administrator account did work.
The standard and administrator accounts were both local accounts, not Microsoft accounts. The updater program (updatercorehelper.exe) had been added to the Windows Controlled Folder Access allowed list at installation time.
