SEB 3.9.0: Failed to start a new Session (Failed to restore WindowsUpdateConfiguration)

[AntonT76]

Dear SEB-Team,

Describe the Bug
We sometimes receive an error message "Failed to start a new session" when starting the SEB. This only occurs sporadically. If you click OK and restart the SEB, it works.

Steps to Reproduce

1. Create a quiz
2. Set SEB-Settings to "Yes - Use SEB client config"
3. as a student start exams PC
4. start SEB
5. get error message - click on ok an restart SEB and now it works

Screenshots an log files

2025-10-24_07h25m53s_Runtime.log

2025-10-24_07h25m53s_Service.log

Version Information

• OS: Windows 11 Education, Version 24H2, OS build 26100.6584, Windows Feature Experience Pack 1000.26100.234.0
• SEB: 3.9.0.787
• Moodle: 4.5.5+ LTS

Additional Context

• we cannot reproduce this failure - it sometimes happens and sometimes not
• we are using a unique seb config file which is installed on every exams pc (if it is neccessary I can upload this file)
• we are using the old version 3.9.0 (since we are already setting up the exam PCs at the beginning of summer before the release of 3.10)
• perhaps it has something to do with the adjustments we made: Disable "Ignore SEB Service"; set SEB Service Policy to "allow to use SEB only with service"; set Kiosk Mode to "Disable Explorer Shell"
• perhaps in the log file you can see problems with "WindowsUpdateConfiguration" - maybe there are running Windows-11-update processes in the background which cause the problem?
• we have seen some similar issues here in the forum, but perhaps this case is new and other conclusions can be drawn from it.

best regards,
Anton