QuickBooks message code 1000 is an error that occurs when QuickBooks encounters a problem and needs to close. If you have encountered this error due to entering the wrong PIN during the resolving process, there are several steps you can take to fix it. Here's what you can do: a) Restart QuickBooks b) Reset your PIN c) Verify your account d) Check your internet connection e) Repair QuickBooks In most cases, following these steps should fix the error caused by entering the wrong PIN during the resolving process ofQuickBooks error message 1000. If you are still encountering the error, you may need to contact QuickBooks support for further assistance. Dial +1-(855)-955-1942.