Error 6000 is a common error in QuickBooks Accounting that's occur when you are trying to open a QB company file or access company file then you may also get a pop-up of this error, that's can restrict you from accessing our important data and file.

Here are list of some 6000 series error:
Error 6000 77 - When you are opening a company file
Error 6000 80 - Try to open QuickBooks Company File >> QuickBooks unable to access the company file
Error 6000 83 - When you are try to open, restore, or back up your QuickBooks company files
Error 6000 301 - Try to access the company file
Error 6000 832 - When your hosting is turned on or file .ND not working properly