What changed in 2.11.0
Build-Info links generated by the TeamCity plugin were updated for Artifactory 7+.
If you saved/bookmarked Build-Info URLs from versions prior to 2.11.0, open the build from Artifactory → Builds again to get the working link in the Build Info Details screen.
If you configured your build step to publish build-info to Artifactory, you can link directly to the build information in Artifactory from a build run view: