Unable to repair or uninstall Ablebits add-in

When trying to install a new version

If you try to install a new Ablebits add-in for Excel when an older version of the product is already installed on your machine, you may face a problem with Windows Installer Package. In the majority of cases, this may happen because the .msi file was lost or the add-in file was deleted or renamed. First of all, try to uninstall an old add-in version via Control Panel instead of Apps & features in Windows 10. If for any reason it doesn't help and you still receive an error message, please follow the troubleshooting instructions on this page.

Uninstall via Control Panel

  1. Close all Microsoft Excel files.
  2. Go to Start and open Control Panel.
  3. Click on Programs:
    Pick Programs
  4. Pick the Uninstall a program option:
    Uninstall a program
  5. You will see a list of all installed programs. Find the add-in you want to uninstall and double-click it.
    Click Yes in the dialog window:
    Are you sure?

If you can't remove the add-in via Control Panel, look at the screenshots below, find the message you are seeing, and follow the instructions.

Remove AblebitsLoader.exe before uninstall

Please look through the screenshots and if you see your message among them, remove the AblebitsLoader.exe file from installation folder and try to uninstall the add-in via Control Panel again:
Installation source is not available.
Did not finish as expected.
Windows installer package problem.

  1. Browse to the add-in's installation folder:
    %LOCALAPPDATA%\Add-in Express\Ultimate Suite for Microsoft Excel
    %LOCALAPPDATA%\Ablebits\Ultimate Suite for Microsoft Excel
    C:\Program Files (x86)\Ablebits\Ultimate Suite for Microsoft Excel
    Another folder you have chosen while installation.
  2. Delete the AblebitsLoader.exe file and try to uninstall an add-in again. If this won't help, remove an add-in from the Registry Editor (instructions below).

Delete registry data

If the problem is that the add-in can't be removed or the network source (.msi file) is not available, you'll see one of the following dialog messages:
Ultimate Suite cannot be removed.
Network source is unavailable.

Also, the cause of the issue may be that during uninstallation some registry data was not completely deleted.

To fix this, please take the following steps:

  1. Download our Diagnostic Tool by clicking on this direct link:
  2. Unpack the downloaded .zip file, run abdiagtool.exe as administrator, and click the Find and Delete Ablebits Products button:
    Run Ablebits diagnostic tool as administrator.
  3. Run abdiagtool.exe with standard privileges and click the Find and Delete Ablebits Products button again:

    Ablebits diagnostic tool.

  4. Note. Please note, you will have to run the abdiagtool.exe file twice: as administrator and then with standard privileges. As a result, after each launch you should see one of the following messages:
    Successfully deleted.
    Ablebits diagnostic tool.
  5. Download your edition of Ultimate Suite for Excel from the following page:
  6. Install Ultimate Suite for Excel again.
  7. Remove the Ablebits Diagnostic Tool from your machine.


Simon Margulius says:
October 18, 2020 at 6:44 pm

I followed directions I'm stuck on "remove the folder". How do i do this?

Check all folders in this branch, and if you find Ablebits or Add-in Express in a folder - remove the folder:



Hello Simon,

Please right-click on the folder and choose Delete. Thank you.


I am getting the following error when trying to install:

"There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor."

Please advise
Thank you

Katerina Bespalaya says:
September 30, 2019 at 11:11 am

Hello Steve,

Sorry to hear that you are having difficulties with the installation.

Most likely, you haven't uninstalled the previous version of the product completely. Please try to clear the registry as described here.

Then download and install the latest version of Ultimate Suite anew using this direct link.

If you still have any difficulties, please contact support@ablebits.com for further assistance.


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