Hi Jenny Taylor ,

Thank you for reaching out regarding the error message you're encountering while trying to open a company file using Remote Data Access (RDA) in Sage. This issue occurs when the company file, created in a previous release, is being accessed by another user in that previous release.

To resolve this issue, you have several options:

1. Update to the Latest Version: Make sure all computers using Sage have the latest update installed. This can be crucial for compatibility with RDA. Instructions on updating can be found under 'How do I update my version to the newest version?' on our support site.

2. Re-download the File: With the latest version installed, re-download the problematic file. Guidance for downloading a company file shared with RDA is available in our help resources.

3. Restart the Connection Manager: On all computers, restart the Connection Manager. Detailed steps for doing this in Windows 10 are provided in our support articles.

4. Check RDA Company File Directory:

   • Log out of Sage 50 on all computers.
   • Inspect the RDA company file directory on each machine. If the company file is in a synchronized folder by any service (like OneDrive, Google Drive, etc.), move the RDA file to a new folder, for example, C:\Sage 50 Data\.
   • Open the RDA company as sysadmin on the main computer.
   • Ensure that the RDA company opens with all options available: Single-user, Multi-user, and Read-only.
   • Check that other computers are functioning correctly.

If you're still experiencing issues or have any further questions, please don't hesitate to contact us for additional guidance. We're here to help you through each step of the process.

Warm Regards,

Erzsi