The temp folder is occupying a lot of space
Run cleanmgr and select "Temporary files". See if that reports 55 gig of space and deletes the files.
If it doesn't then you will need to manually delete those files.
You might want to investigate which service is creating those files. Maybe open a small one with notepad and look for words/strings that might tell you what it was used for. (Exchange maybe?) See if you can find any options for deleting temporary files in that program's configuration settings.
You can use Powershell to delete old .tmp files. Use task scheduler to automate it.
This will delete files older than 2 weeks. (14 days) The -WhatIf switch tells Powershell to report what it would do but not actually do it. In this case, PS will not delete the files (via remove-item). It will report "What if: Performing the operation "Remove File" on target "C:\Windows......"
You should thoroughly test this to verify what files it's going to delete before actually deleting them. (By removing the -WhatIf switch.) You may need to adjust the number of days if the files are still being used.
Do this on a test server first.
((gci c:\Windows\ServiceProfiles -Filter Temp -recurse -Directory -ea SilentlyContinue).fullname | foreach {gci $_ -filter *.tmp}) | where-object -property LastWriteTime -lt ((get-date).adddays(-14)) | remove-item -force -whatif