CbsTemp folder is 53% of total Available Disk - Can I delete folders?

It should be a result of Trustedinstaller so you should be able to delete contents. Mine has 0 bytes.

You could investigate the built in disk cleaner and see if it has an entry to remove them.

Go to 'This Computer' and right tick on the 'C' drive. Then select 'Properties'.
You should see Disk Cleanup.

Because Windows protects itself, using it should not hurt anything.
You should be able to do this on any drive you have installed. One at a time.

I would try this first.

Jack

Please read.

What is the purpose of TrustedInstaller ?

https://social.technet.microsoft.com/Forums/lync/en-US/b6b1ee19-96a3-4b6a-b7af-166287c1b3c2/how-to-i-completely-delete-trustedinstaller?forum=w7itprosecurity





Jack

I can't find any documentation of problems with deleting CbsTemp contents. You could always take a conservative approach and back the contents up to an external drive, then delete the system/boot drive copy. Should problems manifest later, you could restore that directory (or key content items, if identified) and keep on trucking!
FWIW, my CbsTemp folder is empty on all of my Windows 10 PCs (all 8 of them). Seems like having stuff persist there despite cleanup attempts might lead to interesting results when you try to delete them (permissions problems, perhaps?). Let us know what happens if and when you try.
Thanks, and HTH,
--Ed--

CBS temp logs are created when you run sfc /scannow.
Sometimes these logs are helpful if you have a problem.
If your not having a problem you can delete them.
The next time you run sfc /scannow it will create a new log.

Jack