When there are problems with the digital signature or certificate used for authentication during the update process in QuickBooks, error code 15101 will appear. Users are frequently prevented from applying updates or payroll updates.
These are a few typical root causes of this error:
-- Problems with the certificate for the digital signature.
-- QuickBooks is being blocked by Internet Explorer settings.
-- QuickBooks can't access the internet because of a firewall or antivirus program.
-- System time and date settings that are incorrect.
-- Problems with internet connectivity.
If the mistake still occurs, speaking with QuickBooks support or consulting the official QuickBooks community by calling at toll-free number +1(855)-955-1942 may be able to help you further.