TFS Build Step - Encountered error TF400893: Unable to contact the server. Please check your network connection and try again
When reviewing the build steps on an Azure DevOps build, when I click on a given build step to get the details, instead of seeing the build detail output, I get the error:
TF400893: Unable to contact the server. Please check your network connection and try again.
I've tried restarting my browser, I've tried using a different browser, and I've tried restarting the build agent on the build server, all to no avail.
How can I see the build step detail?
Solution
Ensure the URL is secure (https, not http)
I noticed that this happens when the URL that I use to access the build server uses the http protocol. When I switch to use https, I can see full build detail:
Over http:
Over https:
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