I rebooted my servers about a week ago, and ever since the computer with Paycom GMS on it will let the clock run in the upper right hand corner, but states "unknown user" when trying to log in to the system.
It is possible that your program might become corrupted. In this case, I suggest performing its fresh installation. It's also a good idea to update the program's version to the latest release. To obtain a download link for the latest version, visit its review page on Software Informer and press the download button situated under the program's name.