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TC/Web Tiffy viewer certificate not updating automatically

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The TC/Web Tiffy viewer certificate is unable to update automatically.


The URL for auto-updating the Tiffy Viewer Certificate has changed which prevents some current installations from updating it automatically.

Another cause could be that the KCS TC/Web server doesn't have direct internet access, in that case manually download and update the ach.jar & files.


The new URL to download the cetificates is:

Please enter this new URL into the registry key:


and start the certificate update by clicking the "update now" button when it appears after the login into TC/Web. 

Usually it will update ach.jar and automatically, but if you haven't assigned the correct write rights to and ach.jar for the TC/Web user the update might fail. 

Alternatively you could download both files with the following links: 

Copy them manually into the TCWEB folder replacing the old files.


NOTE: can only be done by a user who has sufficient rights assigned, otherwise you cannot overwrite the old files

Just for info: 

"version.xml" is also on the web, but does not need to be copied to the local TC/Web servers! 

And don't forget to do a "iisreset" after updating the certificates, this needs to be done after manual or automatic update! 



  • In KCS version 10.3 the Tiffy viewer is replaced by Atalsoft web viever.
  • The current Tiffy certificates are valid until July 13th 2022 which is the same date when KCS 10.2 is end of support.

Level of Complexity 


Applies to  

Product Version Build Environment Hardware
Kofax Communication Server - TC/Web 10.2.x 3584, 4079    


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