Unable to install update 
Author: Michael Simpson
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Getting the 406 error message when trying to install the new update. Virus checker and firewall have been disabled. What gives?
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Same here, Same error. I use Webroot Antivirus, but it is disabled but I still get that 406 error. Any help please?
Hello Michael and Bradley,
As an alternative to using the built-in update, you can download the full 10.1.0.39 release from here:
http://answers.websitex5.com/profile/downloads
Once downloaded ensure WebSite X5 is closed, then right-click on the setup file and select 'Run as administrator' - this will install the updated version over the old, replacing files automatically as necessary - there is no need to uninstall your previous version first.
This method is preferred by some, as certain configurations can cause 406 errors when using the integrated update (usually as a result of proxy, anti-virus, firewall settings, etc., but each circumstance is unique)
Best regards,
Paul
Author
Thanks. I was able to successfully install the update after running a complete diagnostics suite on my system and cleaned up some registry errors.