Backup fails with “Failed to set network isolation status: Error 0x2d20004: {"domain":"AGENT_CORE","code":"BAD_GATEWAY","debug":{"msg":"network-isolation-unit unit is offline"}}”
Cause
Issue in the product: network isolation unit crashes.
Acronis Development Team released build 31037 to fix the issue.
Solution
To resolve the issue, update the affected agents to the build 15.0.31037.
After updating to build 31037, backups won't fail but will finish with warning. This is planned to be fixed in C22.12 release: