In case you have witnessed that during the initial financial transaction the account has already been active in QuickBooks POS then, Step 1: Open QuickBooks . Step 2: Visit the Edit menu, select Preferences , then proceed to Accounting . Step 3: Visit Company Preferences and clear the ‘ Use account numbers’ checkbox . Step 4: Now tap on OK . Step 5: Then from QuickBooks Point of Sale, perform a Financial Exchange . Step 6: In QuickBooks, go to the Edit menu and then in Preferences, and then Accounting . Step 7 : Choose Company Preferences and press Use account numbers checkbox to reactivate the account number feature. Step 8 : Tap on OK . We hope you have been able to resolve your QuickBooks POS Error 100060 through the simple steps that were stated in the two solutions above. However, in case you have not been able to resolve your issues till now, we will recommend you to contact at QuickBooks Support Number + 1-855-977-7463 and speak to support desk for technical assistance.