cURL error 28: Connection timed out after 10002 milliseconds

Hi there, when I attempt to update a certain plugin on my site I get the following erroe;-

Download failed. cURL error 28: Connection timed out after 10002 milliseconds

I have contacted my host and the plugin developer and there don't appear to be any issues with their servers. I have defender installed on this site and I wondered if this my be blocking the update? Other plugins seem to update without any issues.

Many thanks

Ali