Windows
SentinelOne blocked a Windows 11 upgrade
A Windows 10 Dell tablet could not continue the Windows 11 upgrade because SentinelOne was blocking it. SentinelOne was temporarily disabled, then the upgrade was allowed to resume with an automatic re-enable after 6 hours.
Killed once by someone from XL.net, on 2025-10-10.
Affects
Versions
- Windows 10
Apps
- SentinelOne
Hardware
- Dell tablet
What you see
- Windows 11 upgrade would not continue while SentinelOne was active
Why it happens
Likely SentinelOne protection was likely blocking the Windows 11 installation attempt.
When it shows up
A Windows 10 Dell tablet is failing a Windows 11 upgrade and SentinelOne is active on the device.
You are in this case if:
- SentinelOne is installed and enabled on the machine
- The Windows 11 upgrade attempt is blocked until SentinelOne is paused or disabled
1 fix below
The steps that killed it
The steps are behind a quick check
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Someone from XL.net killed this on a Windows computer on 2025-10-10. It is written up from that one repair, so it cites no outside page.