My deployments failed today with the message:
A child activity failed: The drive containing the directory ‘C:\Octopus\Data\PackageCache’ does not have enough free disk space available for this operation to proceed. The disk only has 421 MB available; please free up at least 500 MB.
But the server drive C: still has 19 GB free disk space. Deleting files does not change the reported available space according to the error message. How can this be fixed?