Article ID: 120593, created on Mar 18, 2014, last review on Apr 20, 2015

  • Applies to:
  • Virtuozzo containers for Windows
  • Virtual Automation


  • A backup or a migration from a PVC for Windows host to a remote location fails with the following error:

    Operation with the Container "PPVZ11" is finished with errors: Connect failed :
  • Windows Firewall is enabled with default settings on the host


The issue is recognized as a product bug with internal ID PVA-34093: Port 4435 is not open by default on PVC for Windows hosts with PVA Agent installation.


Allow communication on port 4435:

netsh firewall set portopening protocol=TCP port=4435 name="PVA Agent Data Transfer"

Search Words

backups timeout

Windows VPS backup failes to connect

is finished with errors: Connect failed : .

1 : Internal error: Connect failed :

d02f9caf3e11b191a38179103495106f 2897d76d56d2010f4e3a28f864d69223 319940068c5fa20655215d590b7be29b 965b49118115a610e93635d21c5694a8

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