VMware vSphere • VMware VM backups failed post uprgading to VBR 13

Most of the VM backups failing the day we have upgraded to VBR v13, required port communication is enabled however backups could not run which were running without any errors earlier witg VBR v12.
Also, there are 7 out of 12 proxies which are affected post upgrade, are there any changes happened for TLS communication or FIPS protocol or any additional ports to be opened.
Somehow if I used backup server as a backup proxy for 2 VMware clusters, the backups are happening fine but can't use backup server for each of these clusters.

Error:
Error: read: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond [system:10060]
Getting VM info from vSphere
Error: read: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond [system:10060]

I haven checking with the support on the Case # 08095755, but no luck on this issue. Did anyone encounter this issue or if why is this behavior with VBR v13?

Statistics: Posted by AnubhavSh — May 19, 2026 10:57 am

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