DBMS=ACCESSCS means you are referencing the SAS PC Files Server which has to be installed or running either on your PC or on another Windows file server. You can just use DBMS = ACCESS if SAS is actually running on your PC and your Access database is stored there too. Just bear in mind that SAS and Access have to be the same bitness (32-bit or 64-bit) for this to work. If the bitness doesn't match then you will need to revert to ACCESSCS.
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