You can clear your QuickBooks Online cache and cookies by following these steps: Step 1.Go to QuickBooks Online, and click on the Accounts icon in the top right corner. Step 2.Select the account you wish to clear the cache and cookies for, then click Clear Cache from the Actions dropdown menu. This will open up a new window where you can choose how many months of data you wish to clear from your account. Step 3. Click on OK when you're done, and then close out of the window.