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sourcetree won't open - gcmw.zip error

Saundra Dick

I double-click the sourcetree icon (blue circle, tree inside). I wait....nothing shows up. I kill the process. I try again. If I get something it is an error message about not being able to read the gcmw.zip file.

After doing this several dozen times, MAYBE I can get sourcetree to open with no error message.

The messages says "Failed to extract file - unable to extract \Users\<username>\AppData\Local\Atlassian\SourceTree\gcmw.zip

Accepted answers

Michael Callahan

I had the same issue with the latest 2.3.5 update. I went to C:\Users\%username%\AppData\Local\Atlassian\SourceTree, right clicked and extracted both gcmw.zip and mcmw.zip. After that SourceTree launches with no errors.

All comments

Ana Retamal

Hi Saundra, usually this error will happen because there's a username/password/2fa dialog open for git, which comes from the folder that the zip is trying to overwrite. Occasionally the zip might be corrupted. I'd suggest:

Shutting Sourcetree down and deleting the contents of %localappdata%/Atlassian/Sourcetree/git_extras, then restart Sourcetree, that way there is nothing to overwrite.
Ensure you're running git >= 2.14, it should be the right GCMW and ST shouldn't keep trying to install it. you can check this by typing git --version in the command line.

If you're still having trouble getting Sourcetree to open, let us know which Sourcetree and OS version are you using and send us a screenshot of the error message.