Proseries 2020 will not open, I was on the phone with customer service for 2 hours with no luck. We tried to uninstall 2020 and recevied this error message "Unistaller cannot be accessed at this time. Another Proseries user is making changes. Still received same message even after all computers were logged off. Not sure what else to do. This error is only occuring on one "workstation" computer.
Since you mentioned that you were going to be monitoring posts here, can you help bctsvc?
Please see https://proconnect.intuit.com/community/proseries-tax-discussions/discussion/proseries-2020-will-not... another user was having the same issue and the workaround suggested by Hieu resolved the missmatch error.
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