As you all know sometimes we come across the snapshot failure issue, a quiescing snapshot is required to take backup but due to issue from VMware or Hyper-V backup, we can’t do any things from backup exec side.
I have come across the issue where the backup snapshot was failing at first attempt but when again we run the snapshot it completed successfully, so basically at second or third attempt it got successful
I have an open case with VMware and they provided solution and issue were resolved but I have waited almost five days to get the final solution from VMware. so as a workaround I have increased the snapshot value so for those five days(s) therefore I always used to have the successful backup.
Also, make sure, failed snapshot should be deleted from snapshot manager
Access backup Exec Server and follow below to increase retry snapshot,
regedit32.exe and navigate to “HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Backup Exec for Windows\Backup Exec\Engine\VMWare Agent “
You will need to create the following keys:
- “Snapshot retry interval” value data = 60
- “Snapshot retry attempts” value data = 5
- “Use hybrid snapshot method” value data = 1
All keys are DWORD (32-bit), set to Hexadecimal and are case sensitive.
Tech Experience By NISHANT 
