MATLAB start problem.

Hello,

I have MATLAB R2019a and every time i open it, it will become froozen for few minutes and then works.

I receive this attached message after 5 minutes of starting.

[Walter Roberson]

Possibly you are having difficulty with an internal firewall blocking some connections from the host to itself.

[Khaled Mahmoud]

I have an academic license and I am using windows defender.

My collegues also have the same problem.

[Walter Roberson]

Windows Firewall might be configured to block connections between MATLAB and auxillary executables that MATLAB uses.

See also https://www.mathworks.com/matlabcentral/answers/362937-unable-to-run-a-live-script#answer_287896

[Ming Li]

I am using the trial version on macOs Mojave 10.14.3.

also meet the same problem.

[Walter Roberson]

You might want to look at System Preferences on Mac to see if you have your internal firewall turned on.

[Chrismo]

This doesn't solve the problem for me.

Once I start up, it takes a few minutes before that message appears. Beforehand I cannot work or load anything (The buttons "NEW" and "OPEN" are grayed out.

It seems to be related to opening the Add-On Explorer. These messages started appearing after I opened it once.