You forgot or need to reset your administrator password
You can't access your administrator account because you forgot your password.
Reset your administrator account password as follows:
Enter your new password and start Upsource with the following command:
<upsource_home>\bin\upsource.bat start --J-Djetbrains.jetpass.admin.restore=true --J-Djetbrains.jetpass.admin.password=XXXXX
where XXXXX is your new password. Please notice two dashes before J, which means properties are applied to the current start only and should not be reverted by a user manually later.