This error can appear for several reasons, with the main reason being due to a connection error between your computer and the Support Package server. This can happen as the result of security software or firewall on your network or local computer blocking this connection.
To troubleshoot this error, please reference the following article:
If you are receiving this error when installing any support package in MATLABR2016b, apply the following patch to your MATLAB installation (the patch is written for the MinGW support package, but is applicable to all support packages):
Hi dear friends, I faced same problem but I've solved it. I use Chrome as my default browser. I added many extensions like add blocker any many other blocking extension which was the reason to show the error. Therefore, You just Disable the Extensions and try it again. Hope it will work......
I faced the same problem while installing several support packages such as Matlab and simulink for Arduino. I strongly suggest you use an internet connection that is very fast (I recommend you use Ethernet/cable instead of wi-fi). This is what I did and the entire process was a success. Please let your fist priority be a super fast internet connection before seeking out for advanced solutions such as proxy/firewall settings. Am very optimistic this will help since it helped me too. Wish you all the best.