Client system failing to encrypt a system file in the windows folder.

[10.16.17 12:46:29:786      CredUMES.cpp: 5708 I] UMES - encrypting "C:\Windows\ServiceProfiles\LocalService\AppData\Local\lastalive0.dat", pid=2cc
[10.16.17 12:46:29:786      CredUMES.cpp: 5600 E] UMES - crypt failed during rename for C:\Windows\ServiceProfiles\LocalService\AppData\Local\lastalive0.dat [MS error = 32]
[10.16.17 12:46:29:802      CredUMES.cpp: 5708 I] UMES - encrypting "C:\Windows\ServiceProfiles\LocalService\AppData\Local\lastalive1.dat", pid=2cc
[10.16.17 12:46:29:802      CredUMES.cpp: 5600 E] UMES - crypt failed during rename for C:\Windows\ServiceProfiles\LocalService\AppData\Local\lastalive1.dat [MS error = 32]

I've tried having the user reboot the system and wait for at least 20 minutes before logging in - he is still being continually prompted to reboot to finish the encryption process.

I can't find much info about this file except that it's involved in recording the timestamp of HDD activity. 

Perhaps it should be added as an exemption?

v/r
-Tom