If you want to get rid of any issue on your desktop- we suggest you should consider diagnosing it properly. If that happens, you will be able to pick the right solution. For QuickBooks Error PS101here are some common reasons. 

• Maybe because you have accidentally deleted or damaged the CPS folder.

• The internet connection settings are wrong. You should check it once.

• Also, if the firewall settings are being a barrier and are blocking your payroll updates of Quickbooks Desktop.

There can be a lot of other reasons why this happens. But if you are able to check in this, things will be better.

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