“A server with the specified hostname could not be found” Error? What is the Cannot install from App Store. This error is just one of the many bugs that have been plaguing the newly released macOS Big Sur. Several users have complained about getting the “A server with the specified hostname could not be found” error in Mac. Mac users have found that installing apps from the Mac App Store has become a lot more complicated. It should be easy - like most Apple tasks - but that isn’t always the case.
However, that doesn’t mean you won’t download and install other applications from time to time. One of the best things about Macs is the range of free apps that come pre-installed.
