Why does the Add-On Explorer or Manager not load in R2015b?

When opening MATLAB Add-ons Explorer or Manager I receive a loading icon indefinitely and the Add-ons Explorer or Manager never loads. 

Answer 1

[MathWorks Support Team]

There is a bug within MATLAB R2015b that affects the MATLAB Add-ons Explorer and Manager. When either the network license manager or WLAN System Toolbox are installed in the same location as MATLAB it causes the Add-ons Explorer and Manager to load indefinitely.

In order to resolve this issue you can install the patch from:

https://www.mathworks.com/support/bugreports/1319705

or perform one of the two steps below:

- Uninstall the network license manager or WLAN System toolbox off the computer running MATLAB and install it on a different computer.

Or, if the network license manager must be on the same machine.

- Uninstall Network License Manager and install to a new location (that is not MATLABROOT).

This is fixed as of R2016a.

Answer 2

[Jay Vaidya]

Please try to run the following in the MATLAB Command Window:

>> opengl software 

And then try opening the Add on explorer again. It worked for me.

If that works, you can save the preference so that MATLAB always opens with Software OpenGL by running:

>> opengl('save','software')