QuickBooks software is highly innovative software used for accounting and bookkeeping tasks for businesses. But QuickBooks has its own limitations that come up due to certain errors like QuickBooks error 1638. QuickBooks error 1638 is seen with an error message as “Error 1638: Another version of this product is already installed.
What are the reasons for the occurrence of QuickBooks error 1638?
- Installation of QuickBooks guidelines are not followed appropriately.
- One of the QuickBooks programs is already installed in the system.
- QuickBooks installation source is damaged.
- QuickBooks is blocked by Windows firewall settings.
- Viruses might infect the system.
What are the ways to get rid of QuickBooks error 1638?
Step 1: Locating the QuickBooks version
- Press windows+R.
- It will take you to the run command and then open the control panel.
- Press OK.
- Go to programs and then to programs and features.

- Move to the QuickBooks, and open the program.
Step 2: Opening QuickBooks program
- Move to the start option and from programs, select QuickBooks.

- Choose the corrected version of QuickBooks.
Step 3: Repairing QuickBooks.
- You should download QuickBooks tool hub followed by getting the QuickBooks tool hub installed.
- Open the QuickBooks tool hub.
- From the list, reach the program problems option.
- Select Quick Fix my program.
- Open QuickBooks.

Also Read: How to Get Rid of Negative Inventory Issues in QuickBooks
Step 4: Perform QuickBooks clean installation.
Uninstall QuickBooks
- Login to the computer as Admin.
- Go to the control panel.
- From the option, select Programs and Features.
- Select the version from the list.

- You need to then uninstall the QuickBooks.

Reinstall QuickBooks
- Open Quickbooks.exe and follow the onscreen prompts.
- Accept the agreement license.
- Enter the product details like product and license number.
- Select Next.
I am sure that the methods that were discussed above were helpful in fixing QuickBooks error 1638. If the issue still persists, feel free to connect with QuickBooks Support QBS Solved at +1(888) 910 1619.