ERROR: 'ACCESS.DTA is in use' when opening Sage 50 Accounts

How to resolve the message 'ACCESS.DTA is in use' when you open a company in Sage 50 Accounts

There are several reasons why you receive this error message:

• The system incorrectly flags the file as read-only, non-existent, corrupt, or open on the server
• Incorrect Windows permissions to open or edit the file
• Incorrect Sage 50 Accounts licence or data from an earlier version
• Antivirus software

 TIP: Follow our File locking and exclusive program areas in Sage 50 Accounts article for help with these issues.  

Restart services

To fix this issue you, need to stop and restart your Sage services.

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If the issue persists

If this doesn't resolve your issue, follow the rest of the steps in the Error: 'Waiting to open file...' 'Access Denied', 'Internal deadlock' or 'file is in use' article.