Why do I encounter a "Received fatal alert: protocol_version" when installing a Support Package in MATLAB R2017a or earlier?

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MathWorks Support Team
编辑： MathWorks Support Team 2023-2-24
When installing a Support Package in MATLAB R2017a or earlier, I keep getting this message (Fatal Alert: Protocol_version). The installer says that "MATLAB is in the middle of a downloading operation".

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MathWorks Support Team
编辑：MathWorks Support Team 2023-2-24
If you are seeing this error message when installing a Support Package into a release of MATLAB that is R2017a or older, then you will need to follow the directions from the Bug Report link below to resolve the error.
Bug Reports
https://www.mathworks.com/support/bugreports/1741173
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Walter Roberson
Walter Roberson 2018-5-30
My experimentation a moment ago with Firefox showed that clicking to download the attachment failed to bring up the appropriate page whenever I have Firefox configured to tell websites "Do Not Track". Turning that off allowed me to start the agreement and do the downloads.
Walter Roberson
Walter Roberson 2018-5-30
In each case, the repair is to go into the bin directory of your MATLAB installation, and go into the architecture-specific directory there such as win64 for windows, and to change or add a java.opts file with content
-Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2

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