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TCfW uninstalling issue with error 1721



The error 1721 might occur if you want to uninstall TCfW. 
If this error is coming up, the uninstallation cannot be continued.

You would get this error pop-up window:

Screen Shot 2018-07-26 at 10.13.17 AM.png


  1. This issue is caused by some damaged system files and have obviously an impact to the windows installer. It can be resolved with running the system file checker (sfc.exe). Checked the following KB-article from Microsoft for additional hints:
    The solution is to open a command prompt, enter the following command and press enter: sfc /scannow
  2. If 1.) does not help, download and run this troubleshooter:

Applies to

All KCS versions.

Keywords: TCfW, KCS, Kofax Communication Server

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