Source code checkout fails on Windows agents due to WinSock error

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Platform notice: Server and Data Center only. This article only applies to Atlassian products on the Server and Data Center platforms.

Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.

*Except Fisheye and Crucible


When running a build on Windows agents, the checkout fails with the following error in the atlassian-bamboo.log

2017-07-20 17:29:26,299 WARN [sshd-SshServer[1272c81]-nio2-thread-1] [Nio2Acceptor] Caught IOException while accepting incoming connection from / An operation was attempted on something that is not a socket An operation was attempted on something that is not a socket


This issue occurs because the WinSocks configuration needs to be refreshed to allow communication to and from the agent.


  1. Open the Command Prompt with elevated permissions (Run as Admin)
  2. Run the following command at the command prompt: netsh winsock reset
  3. Press Enter, and restart the computer

Related bug tickets:

BAM-18569 - Getting issue details... STATUS

BAM-18570 - Getting issue details... STATUS


Last modified on Jul 21, 2017

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