I recently upgraded an HP 700-410xt workstation from Windows 8.1 Pro to Windows 10. The upgrade itself went very well, and the user noticed immediate improvement with the various Adobe suite of products that he uses.

However, he reported that the each morning his workstation would have an error message on the screen regarding LogonUI.exe, or a low memory warning:

Note — he closes all his apps and locks the computer at night. I was able to monitor the computer that evening and identified that the LogonUI.exe service was indeed consuming all available memory.

I did the normal effort of making sure that Windows 10 patches were up to date, as well as computer drivers. I even went so far as to disable any apps with “live tile” turned on.

Finally, several other MVPs that were trying to assist asked (1) is this an HP computer, and (2) were there any fingerprint or biometric software installed? The answer was YES to both questions. The computer in question had the HP Simplepass program installed, although the user was not using any fingerprint scan device.

And then it turns out that this issue with LogonUI.exe has been affecting HP computers for at least two years, both on Windows 8.1 and Windows 10. In all cases, uninstalling software such as HP SimplePass or HP OmniPass fixed the low memory issue with LogonUI.exe!

I uninstalled HP Simplepass, rebooted the computer, and a day later, the user reported all was fine!