TFS Locking issue

down vote

Files with .dll extension as well as other extensions like .exe, .doc, .docx, etc. are automatically locked because (as mentioned) here they cannot be merged. If you want to disable the automatic lock and allow these files to go through gated check-in, follow the steps below: Log in to your build server. Open visual studio. In team explorer, log into your team project. Go to "Settings". Under "Team Project Collection", select "Source Control". Set "File Merging" property to "Disabled" for any file extension you don't want to be automatically locked.