[Solved] Extender Provider failed to return an Extender for this project - Visual Studio Community 2015

Hi.., Recently i encountered visual studio designer exception when i try to open EDM file in visual studio " Extender Provider failed to return an Extender for this project " like this below

Problem is i have been running the application 5 hours plus time, without stopping in local.

Then when i try to view edmx file, encounter this exception.

To stop this exception just reload the project so that all objects gets created again and available to view.

When an application is running idle for hours, it is better to reload that project.

You don't have to delete obj and bin folders. But for different situations it may work. Possibly when this exception encountered while in working in designer mode by simply reloading project, you can remove that exception.