Windows
Where Are Windows CBS Servicing Logs?
Windows CBS servicing logs (CBS.log) for update and DISM/SFC troubleshooting.
Last updated
Windows servicing (updates, SFC, DISM) logs to CBS.log under Windows Logs. Rotated persists archive older runs as compressed cabinets.
The live log grows fast during updates. Filter before reading; raw CBS.log overwhelms every viewer.
Where Windows stores this, by platform
Windows
C:\Windows\Logs\CBS
Holds CBS.log plus CbsPersist archives. Read with findstr filtering; SFC details land here. Admin rights required.
Frequently asked questions
How do I read CBS logs?
Run findstr /c:"[SR]" CBS.log to filter servicing entries, or check the persisted CbsPersist archives for older runs. SFC and DISM both log here.
Notice an outdated path? Let us know.