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What are the essential ports required for windows agent based backup in veeam between windows server and backup server ( windows )

  • May 11, 2026
  • 4 comments
  • 20 views

What are the essential ports required for windows agent based backup in veeam between windows server and backup server ( windows ) , the protection group is already existing and few servers backups are running successfully, new servers are being added to protection group and agent installation / rescan is getting failed 

4 comments

Chris.Childerhose
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Go to the calculator site to do port mapping and Source/Destination mapping.  You will be able to export the report as well to CSV - Veeam Calculators

Great tool for this kind of thing.  Also, check the Veeam help too, where you can ask Veeam Intelligence - Veeam Help Center - Technical Documentation


coolsport00
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  • Veeam Legend
  • May 11, 2026

The User Guide shares the port requirment ​@Bennet , if you haven’t seen it:

https://helpcenter.veeam.com/docs/agentforwindows/userguide/ports.html?ver=13


coolsport00
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  • Veeam Legend
  • May 11, 2026

Looks like the default port is 10005:

TCP Port Used for Windows Agent to VBR

For other services (i.e. file restores and auth tokens), other ports are required as listed in the link.


Marcel.K
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  • Veeam Legend
  • May 12, 2026

it would be fine, if you could share the error

if it failing on credentials, then 445/tcp from VBR to agent is missing