While downloading and installing QuickBooks payroll updates, are you encountering an error that reads, "An internal file in QuickBooks has become unreadable [PS107]"? If so, this suggests that the QuickBooks installation files are broken or corrupt. There are several causes for file corruption, and once a file becomes corrupted it is no longer readable or usable by the system. You can use the QuickBooks File Doctor to fix damaged files, but you might also need to take extra steps to troubleshoot QuickBooks payroll error PS107. You may easily fix issue PS107 in QuickBooks by following the instructions in this guide.