Hello~

When i update UI for ASP.NET AJAX 2016 Q1 with vs2013 that display   all of telerik-controller error 

so what's happen with it? 

Hello Paul,

What is the error you get, what was the process you used to update and what is the versions you updated to and from?

In the meantime, I suggest the following:

1. Perform a manual upgrade as described here: http://docs.telerik.com/devtools/aspnet-ajax/installation/upgrading-instructions/upgrading-a-trial-to-a-developer-license-or-to-a-newer-version#manual-upgrade.
2. Disable the BrowserLink feature in VS.
3. Review this thread for known issues and changes to see whether something there affects your code base and causes an error: http://www.telerik.com/forums/known-issues-and-important-changes.
4. If you are receiving errors in design-time only, review the following:
   1. clean up the VS caches: http://weblogs.asp.net/psheriff/clean-up-after-visual-studio.
   2. general design-time issues: http://docs.telerik.com/devtools/aspnet-ajax/general-information/troubleshooting/general-troubleshooting#design-time-error-on-a-page-using-telerik-controls.
   3. detailed descriptions and solutions for design-time problems: http://docs.telerik.com/devtools/aspnet-ajax/general-information/troubleshooting/design-time-troubleshooting.

Regards,