Call to download server failed (HTTP error code: 403).

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Dave Watson 2024-12-17

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https://ww2.mathworks.cn/matlabcentral/answers/2172228-call-to-download-server-failed-http-error-code-403

编辑： Dave Watson 2025-1-30

The installer for a compiled (using R2015b) app, that has been distributed to many customers for several years, is suddenly (noticed in last couple of days) throwing the above exception. This has happened from multiple sites, domestic and international. The installer is set up to download the MCR from MathWorks.

Is anyone aware of any MathWorks, Windows (10, 11) updates that might be causing this?

Thanks! It's a bit urgent!!

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Parker 2025-1-6

Awesome, thanks for relaying the workaround, Dave. Most of us are on Windows 10 or 11 so this should be workable

Dave Watson 2025-1-29

编辑：Dave Watson 2025-1-30

Received just now from The MW:

"Good news, the developers have announced that the issue has been fixed, you no longer need the environment variable and should be able to run your compiled installer again.

So, please try deleting the environment variable and running the installer to see if you still encounter the same issue."

2025.01.30 I tried installing our compiled app (the one that asks for a download of the MCR if not alreay installed) and it worked fine after deleting the env variable. Seems we're back in business.

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