This message can appear for a few different reasons.
If you see the error 'The Backup has been unsuccessful. Backup job terminated unexpectedly', this is a different error. Follow the steps in our 'The Backup has been unsuccessful. Backup job terminated unexpectedly' article.
To check if you're using the latest build of the software, visit sage.co.uk/au.
If the issue persists, follow the Firewall settings section.
Stop and restart the services on the computer that holds your data.
This message can sometimes appear on large datasets, when the backup creates a snapshot of data.
To resolve this issue, your computer must meet the firewall requirements for Sage 50 Accounts.
Turn off the new backup method, then run Check data and fix any reported errors.
CAUTION: Don't use these steps as a permanent solution as this stops scheduled and concurrent backups working.
If the error message stops, there's a permissions issue to the temp folder, it's full or has a size limit. To avoid to turning off concurrent backups, contact your IT support to check for temp folder for size limits and Windows permissions.
On the computer that holds your data, check you can write files to the temporary folder. If you're not sure how to check this, contact your IT support.
TIP: Use our Where is my data kept? guide to find the computer that holds your data.
If you connect to your data though a mapped network drive, changing to a UNC path can resolve the issue.
For more information, see our Connecting to your Sage Accounts data using a UNC path article.