Going forward please don't repurpose old discussions as this gets messy. Ask a new question and potentially add a reference link to a similar old discussion.
WORK points to a session specific folder location that gets created during SAS invocation and that's always owned by the user under which the session executes. This means a SAS process always has full access to WORK.
In my experience such intermittent access problems are almost always caused by a virus scanner that locks a file during the scan. You need to talk to your SAS Admin so that SAS files get excluded from scanning.
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