Why do I see the error "Something unexpected occurred.: This is not common." in my log when trying to install a MATLAB update?

Why do I see the error the following error in my log when trying to install a MATLAB update?

Update available 
Failed to download release data 
Something unexpected occurred.: This is not common. 
To resolve this issue, contact Technical Support. 
Update session complete.

Answer 1

[MathWorks Support Team]

If you are seeing this error when trying to update the R2023a Pre-release:

Please uninstall the pre-release and install the full release of R2023a.

Otherwise, this error likely caused by network-connectivity issues. To troubleshoot this issue, you can look into the connection error using the article below.

Why do I get a connection error when installing or activating MATLAB or another MathWorks product?

https://www.mathworks.com/matlabcentral/answers/92634

If the network issue cannot be resolved, you can install the update manually with the offline installation files using the following article.

How can I download and install a MATLAB Update manually?

https://www.mathworks.com/matlabcentral/answers/456448