What does it mean by QuickBooks clean install?

It's a feature in QuickBooks software. The QuickBooks clean install tool helps you remove and reinstall the QuickBooks on your system. It is required when an issue doesn't get resolved with any method. But, before you run clean install your system, I advise you to create a backup of your essential files in QuickBooks. So in case, you can't retrieve the company field after reinstalling it, you'll have the backup.

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