You can enable Single User mode in QuickBooks to quickly resolve QuickBooks Error 15102. Make sure to execute these measures with precision to fix this error in one go and without any further problems. Follow the steps written below:
- Log out of all the accounts in the network if you are using QuickBooks in Multi-User mode.
- Open QuickBooks on the system that is experiencing problems or is having issues or errors while updating.
- Click on Switch To Single User in the File menu.
- You can try to update QuickBooks Payroll once again. Navigate to the Help menu, and from there, you can update QuickBooks. With this step, you have enabled Single User mode in QuickBooks.
If the above steps are not enough to resolve your error then you can also follow this short and simple guide on QuickBooks Error 15102.