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To fix this error you must first make sure that the Sync Manager is up to date. Open your company file in QuickBooks. After that, Go to Edit then Select Preferences. Next, Here you have to select Integrated Applications. Uninstall the QuickBooks application. Rename the Intuit folders.

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QuickBooks is used to handle accounts, bank transactions, bills, taxes, invoices, etc., of small and mid-sized businesses. When you access QuickBooks, you will face the QuickBooks Sync Manager Error used to exchange data between the desktop and the other version stored in the cloud server. Let’s go through some resolving steps.
● Resolve QuickBooks Sync Manager Error
● Rectify QuickBooks Sync Manager Error 17_7300
● Troubleshoot QuickBooks Sync Manager Error 6_13944
After implementing the above steps, if this problem is not removed from QuickBooks, you must call QuickBooks customer care to fix it immediately. A technical expert will assist you with some accurate methods and listen to your queries properly.
Read more: - How to Fix the QuickBooks Sync Manager Error | Best Ways to Fix the QuickBooks Error 15243