MATLAB installation AlexNet failed to solve the problem
Recently, I have been working on my graduation project and used the AlexNet network for testing, but encountered the problem of "There was a problem downloading the support package. To solve this problem, please refer to this MATLAB answer". After consulting the relevant literature network, there are relatively few solutions. After that, I found the relevant solution on the official extranet of MATLAB.
1. First of all, make sure that it must be 2016B and above. Some computers may not work in 2016. I use the 2019A version
2. The default network connection is normal, and anti-virus software such as firewalls are turned off.
3. Under System Variables, select New. Set the first variable name "JAVA_TOOL_OPTIONS", its value is "-Djava.net.preferIPv4Stack=true" (enter without quotation marks).
4Select New again. Set the second variable name "JAVA_OPTIONS", its value is "-Djava.net.preferIPv4Stack=true" (input without quotation marks), and then click OK to
restart MATLAB to complete the installation.
It may take longer, about 30 minutes.
Can be tested after installation
