Google App Engine Fix “Another transaction by user acct is already in progress”

If an update for Google App Engine doesn’t complete it will cause an error and not allow you to upload new updates the error code is similar to: Another transaction by user acct is already in progress for this app and major version. That user can undo the transaction with appcfg.py’s “rollback” command.

Rollback Google App Update

Google App Engine Error Code

• Create a new batch file
• Copy the code below, make sure you change the email and appnamehere to your appname

"C:\Program Files\Python26\python" "C:\Program Files\Google\google_appengine\appcfg.py" -verbose --no_cookies --email=email@gmail.com --passin rollback appnamehere

• Finally run the batch file and the update will be rolled back