Fix “Safari Can’t Open Page NSPOSIXErrorDomain:28” Error on Mac

Some Mac Safari users are encountering a Safari failure that causes a curious “NSPOSIXErrorDomain:28” error message to appear, preventing the web browser from working as usual.
The full error message appears seemingly at random when Safari on the Mac is used to open a new Safari window or tab, or when a page is trying to load, and is stated in full as follows:
‘Safari Can’t Open the Page.
Safari can’t open the page. The error is: “The operation couldn’t be completed. No space left on device” (NSPOSIXErrorDomain:28)‘
Variations of the generally vague “Safari can’t open the page” error crop up for various reasons, typically related to a hiccup in internet connectivity or service, but this particular NSPOSIXErrorDomain:28 error message is different in that it shows up even when the connection on the Mac is otherwise working as normal.

















