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We are here to discuss today how to resolve QuickBooks Error 1638 when another version of this product is already installed” in QuickBooks Desktop. If you are here to get help from our experts, then no need to worry as we will help to fix this QuickBooks error issue with the help of QuickBooks Desktop Support Phone Number. In order to resolve this issue while installing QuickBooks Desktop, then users have to make sure that they have installed the correct version of QuickBooks by following given steps below:

Step 1:  You can locate your QuickBooks version in QuickBooks Desktop.

  1. First of all, to open run command, press Windows+R on your keyboard.
  2. Next, search Control Panel, then press OK.
  3. If Control Panel appears in Category View, then click & select Uninstall a Program.
  4. You need to check in program list that QuickBooks version you are installing is present or not.
  5. If you found it on the list, then unzip the program.

Step 2: You can open the program in QuickBooks Desktop.

  1. First, navigate to the Start menu.
  2. Then click & select All Programs option, then select QuickBooks.
  3. After that, choose the correct QuickBooks version in QuickBooks Desktop.

In case of not opening QuickBooks:

Solution 1: Users can run repair QuickBooks. In case, if it doesn’t work then you need to move on to Solution 2.

Solution 2: Users can also clean install QuickBooks Desktop. In case, if this doesn’t work, then it is required to install QuickBooks to a different directory folder by browsing to a different location.

However, if you are getting this QuickBooks error 1638 again or windows installer error and you getting issue in uninstalling QuickBooks, then we will recommend you to contact your IT professional or Microsoft for help.

We really hope that the above given information in this blog will helpful to resolve your queries. In case, the above-mentioned solutions don’t work, feel free to contact us on QuickBooks Desktop Support USA. Users can also send us a mail at Even they can get in touch with our experts available all round the clock and available geographically. With the constant support QuickBooks Desktop Support, you may feel tension free while you are on a run to QuickBooks. You can also visit @

Post Author: qbooks247

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