Since yesterday night several Windows 7 O.S. was affected by high memory usage due to SophosFileScanner.exe process.
CPU usage was constantly at 100%.
Sophos support indicated that problem was due to this reason:
- During
a staged roll-out of an updated machine learning model, customers began
reporting excess CPU usage. As it became apparent that the
performance issues were related to this silent update, the decision was
made to roll back to the previous version.
- The
problematic model version identifier is 20230629. The rolled back
version is 20230202. The rollback should be completed
imminently.