– Open your database administration tool (e.g., phpMyAdmin),

– Switch to table tl_user of the Contao database and edit the record that corresponds to your Contao administrator account.

– Set a new password and choose the SHA1 function to encrypt the password from the drop down menu on the left hand side of the input field.

If this does not work, enter the following code:

 - 8e0107bf1c7fbeef6538dff7173aa458e7dd585e:8c37627a0e2c606189e7765

–  The code above is the encrypted version of the password reset123, which you can then use to log into the back end.