We are using TFS 2017 and it has several builds configured. A little while ago we started getting an error on the second step, which is to run a PowerShell Script (first step is Get Sources):
2018-06-28T19:58:59.4326443Z ##[command]. 'K:\_work\3\s\BuildScripts\MainPre.ps1' -env "test"
2018-06-28T19:58:59.6236482Z ##[error]Access is denied
2018-06-28T19:58:59.6266488Z ##[section]Finishing: PowerShell Script
A build 4 hours ago worked just fine. No changes were made to the file, or the filesystem. I am waiting to hear from the network team to see if they did anything to the build account.
What could cause this error suddenly and how do I fix it? Note: I have not yet tried to turn it off and on again.
While checking through the server, I noticed that the Event Viewer says Symantec SONAR was blocking the power shell scripts. After our network team added an exception for the build processes, our builds were again working as expected.