#Veeam Replication and copy backup error

Error: There is active sync task, Job name .....................

Cause:
1. The target (destination) virtual machine having issue (virtual disk/snapshot corrupted).
2. The replicate virtual machine disk size too big (over WAN accelerator cache size).


Solution 1: Reboot the WAN accelerator server
1. Make sure the you stop the active sync task (job) that mentioned in statistics.
   (example: there is active sync task. Job name xxxxxxxxx...................)

2. Reboot the WAN accelerator (try reboot source first).


Solution 2: Clear WAN accelerator cache
1. From Veeam Backup and Replication, go to Backup Infrastructure --> WAN Accelerators.

2. Right click on the WAN Accelerator server, and select clear cache. 

3. Re-run the replication or backup copy job.

Optional:
1. Make sure the VM no issue. Especially the virtual disk. Sometime virtual disk corrupted caused by Veeam snapshot. You might need to delete and consolidate all the snapshots.