You can delete all the CBS.log files, and all the CBS.persist.log files excluding the last CBS.persist.log file. The last file includes some useful logs about the last update that help Windows Troubleshooter.
If you want, you can also delete the last one, but I don't suggest that.
If you don't know how to delete them, I can prepare a guide for you.
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Hello Esther,
You can delete all the CBS.log files, and all the CBS.persist.log files excluding the last CBS.persist.log file. The last file includes some useful logs about the last update that help Windows Troubleshooter.
If you want, you can also delete the last one, but I don't suggest that.
If you don't know how to delete them, I can prepare a guide for you.