To resolve the issue of ArcGIS Pro getting stuck on the "Backup in Progress" screen, follow these step-by-step troubleshooting guides:
Antivirus software (e.g., McAfee) or other background processes may try to scan the backup file while it's being written, preventing ArcGIS Pro from finishing the task.
(most common fix)
If ArcGIS Pro is currently frozen with this message, try these steps in order:
Inside, you will see files named like ProjectName_Backup_20231025_153012.aprx .
Projects saved on network drives, VPNs, or cloud-synced folders (like OneDrive) often trigger this because the backup process struggles with slow write speeds.