TFS2015 build agent cannot sync repository

Question

I am trying to set up build automation (it will be for CI in the future, but at the moment I'm queuing builds manually) on a TFS 2015 server, using the newer method, not the old XAML method. I have a build agent installed and registered (which seems to have gone okay), but every time I try and queue a build, it will fail when syncing the repository with the message "Unable to read data from the transport connection: The connection was closed."

The user that the build agent service is running as has access to the TFS repository.
As far as I know, there is no proxy between the build agent and the server.
The server is within the same network as the build agent; it is not Team Services.
The agent version is 1.83.2

What should I be looking for to fix this? The log is below:

2017-06-28T15:14:02.4032890Z Starting: Get sources
2017-06-28T15:14:02.4188890Z Entering TfvcSourceProvider.PrepareRepositoryAsync
2017-06-28T15:14:02.4188890Z localPath=C:\TFSBuildAgent\WorkFolder\ff694322\SCR
2017-06-28T15:14:02.4188890Z clean=False
2017-06-28T15:14:02.4188890Z sourceVersion=C13590
2017-06-28T15:14:02.4188890Z mappingJson={"mappings":[{"serverPath":"$/SCR","mappingType":"map"},{"serverPath":"$/SCR/Drops","mappingType":"cloak"}]}
2017-06-28T15:14:02.4188890Z Syncing repository: SCR (TFVC)
2017-06-28T15:14:02.4188890Z workspaceName=ws_ff694322_3
2017-06-28T15:14:03.5264910Z Workspace Name: ws_ff694322_3;Build\a2dd1d8a-5146-47c6-bda1-6f761cddeecd
2017-06-28T15:14:13.0113076Z ##[error]Unable to read data from the transport connection: The connection was closed.
2017-06-28T15:14:13.0425077Z ##[error]Unable to read data from the transport connection: The connection was closed.

Not that I know of between the build agent and the TFS server. The server is on-premises, not Team Services. I'll add that to the question. — Richard Ward
Try to setup a new build agent and try again to check whether the issue persist. — starian chen-MSFT

Andy Li-MSFT Andy Li-MSFT · Accepted Answer · 2017-06-29T03:53:51

You could try below ways to narrow down the issue:

Please check your TFS version, the agent version 1.83.2 is for TFS 2015 RTM. if your TFS is not 2015 RTM , suggest you update the agent to the specific version.
Check the event viewer on the TFS server if there are some related error info.
Try to set other accounts which can get the sources as the agent service account.
Try to deploy a new agent to check this issue again.
If you are using Window Server 2008R2, just try to apply the HotFix and try the workaround.

TFS2015 build agent cannot sync repository

1 Answers