Correct Backup and Replication Performance Data collection issues
Permissions and firewall not configured appropriately
Verify that the Account being used to connect Veeam Backup and Replication server in Veeam ONE has correct permissions.
To check the account, go to Veeam ONE Monitor. Select Data Protection View.
Right click on the Backup and Replication Node(s)
Note the account being used to connect.
On the Veeam Backup and Replication Server Verify this account as well as the Veeam ONE service account are added to the Event Log Readers Group in Local Systems and groups
Verify that even if Firewall is off Activate an additional rule for a Firewall: COM+ Network Access (DCOM-In)