We appreciate you for posting here in the Community, @ormic. Let me help you regarding the issue you're experiencing when backing up data in QuickBooks Desktop (QBDT).

You may receive errors when Intuit Data Protect (DP) didn't successfully back up the open files:

• The QuickBooks company file is open via a mapped network drive while backing up occurs.
• IBuEngHost.exe is running as the local user instead of the user SYSTEM.
• Your Windows File System is not NTFS.

In resolving these errors, here are some troubleshooting steps you can do.

If the QuickBooks Desktop file is open via network drive, the first step is:

1. Close the QuickBooks company file.
2. In the system tray, click the IDP, and choose Open Intuit Data Protect.
3. Select Back up now.

The second step is to verify if theIBuEngHost.exe running as the System user and not the local user.

1. Click right on the Taskbar and choose Start Task Manager.
2. Go to the IBuEngHost.exe and view the user listed in the User Name column. Click 'Show processes from all users' to see IbuEngHost.exe.
3. To correct this, the QBIDPService.exe is running, and reboot your system.

• To check if QBIDPService.exe is ongoing, from the Windows run line by typing in Services. msc, open the Services Console, and click Enter.
• QBIDPService.exe should show with a Status of Started. Otherwise, restart your device.

To proceed with checking the drive file system, you can visit this article to guide you: Intuit Data Protect backup incomplete: Files did not backup because they were open or not reachable.

On the other hand, may I ask what code in the email you meant when you contacted our support? If the issue persists, I recommend contacting our support team again. They have the necessary expertise and tools to help you more regarding this concern.

Moreover, you can check this link to help you as a reference in verifying and rebuilding your data in QBDT: Verify and Rebuild Data in QuickBooks Desktop.

Reply to this thread for more queries with Intuit Data Protect in QBDT. I'm happy to help you. Have a good one!