MATLAB: Do I encounter a “Received fatal alert: protocol_version” when installing a Support Package in MATLAB R2017a or earlier

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".

Best Answer

This error does not occur when installing Support Packages in MATLAB R2017b.
This issue is now resolved in the following error bug report page:
Please contact MathWorks Technical Support and create a help ticket if you run into any other related issues