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Question

Failed to connect to agent EP The message recdeived was unexpected or badly formatted

  • January 12, 2026
  • 8 comments
  • 23 views

Using Veeam Backup and Repliaction 12, and running a file backup, receiving the following error, “Error: Failed to connect to agent: ‘VeeamServerName’, EP ‘VeeamServer IP Address:2502’. The message received was  unexpected or badly formatted.

8 comments

Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • January 12, 2026

What version of Veeam are you using?  Also did you check the logs - C:\ProgramData\Veeam\

Without further information you will need to contact Support and open a ticket.  I think this would be the best route to have them analyze the logs to determine the issue.


coolsport00
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  • Veeam Legend
  • January 12, 2026

Aside from checking the logs and/or contacting Support as Chris suggests...have any changes been made to the Job? Environment? Network? Permissions to the source host change? Firewall or A/V changes or exceptions been made? Those are some things I’d check on.


  • Author
  • New Here
  • January 12, 2026

no change on the job, using veeam version 12.3.2.4165


coolsport00
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  • Veeam Legend
  • January 12, 2026

Ok. Well..aside from checking the log location of the Job log, a case to Support is probably your best bet.


  • Author
  • New Here
  • January 12, 2026

can you direct me to the link to create a support ticket...thank you for your help


coolsport00
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  • Veeam Legend
  • January 12, 2026

Go to veeam.com, hover your mouse on the Support tab, then click open a case:


You are then directed to login and proceed to open a case.


  • Author
  • New Here
  • January 12, 2026

thank you for your help


coolsport00
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  • Veeam Legend
  • January 12, 2026

@itcgtmt.com - no problem...keep us posted