After Upgrade Veeam Backup for Oracle Linux Virtualization Manager and Red Hat Virtualization Appliance Is Listed as Unavailable
| KB ID: | 4681 |
| Product: |
Veeam Backup & Replication | 12.2 Veeam Backup for Oracle Linux Virtualization Manager and Red Hat Virtualization | 5 |
| Published: | 2024-10-23 |
| Last Modified: | 2026-11-04 |
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Challenge
After the upgrade of Veeam Backup & Replication to version 12.2 and subsequent upgrade of Veeam Backup for Oracle Linux Virtualization Manager and Red Hat Virtualization to version 5, the Appliance is listed as Unavailable in the Veeam Backup & Replication Console. When this occurs, related jobs fail to start, and attempts to update Proxy parameters fail with the following errors:
Failed to edit the backup appliance settings: The backup appliance did not start within the expected time period
Failed to synchronize jobs: Communication channel has been forcibly closed
Cause
This issue occurs because the backup appliance attempts to connect to each IP address of the Veeam Backup Server sequentially. If multiple addresses are configured on the Veeam Backup Server and are not accessible from the appliance, the cumulative time spent attempting to connect to each address may exceed the service startup timeout.
Solution
This issue was resolved starting in Veeam Backup & Replication 12.3.0.310.
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