unable to update auto-refresh reference 'ajaxcontroltoolkit.dll and commonlogging.dll

I had this same problem with the AjaxControlToolkit. I've got no idea what caused it, but by simply re-installing the toolkit into my project with NuGet, that fixed it.

Install the package by following the steps below:

  1. Right-click on your project and select Manage NuGet Packages.
  2. Search the online repository for the package you want. In my case, this was 'ajaxcontroltoolkit'.
  3. Find the package in the list of results that appears and click the Install button on it.

What this does is it removes all previous references of the package (older DLLs and references in your web.config file) and replaces them with newer, correct references

It's that simple.

Hope this helps you


Look in the bin folder of the project - for a file called - in your case:

ajaxcontroltoolkit.dll.refresh

This will have an incorrect path to the dll file. You need to update the path to wherever the dll is now.