I have several private repositories on my own server that I connect to from Windows machines with password authentication. Today, I cannot connect to them because SourceTree is not showing the Username/Password dialog anymore. I can connect when using the system git from the command line and when using the git bash that pops up when pressing the "Terminal" button in SourceTree, so I know everything is fine on my git server. I can also connect from OSX machines using SourceTree, but they use SSH authentication instead of password authentication.
I ran Askpass.exe separately and it shows the dialog correctly and returns the password, but it doesn't show when it should in SourceTree.
I downgraded SourceTree to 1.6.14 but it doesn't show the password dialog now, either.
I also tried setting up an SSH key with SourceTree's Putty, but that didn't work, either.
Any ideas?