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NSPOSIXErrorDomain:100

In the past 3 months I have not been able to access the Weather Network page on Safari. I receive this error statement: NSPOSIXErrorDomain:100.

Can anyone advise a solution to this issue?

iMac (27-inch, Late 2012), OS X Yosemite (10.10)

Posted on Jul 13, 2016 6:03 PM

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Question marked as Top-ranking reply

Posted on Oct 5, 2017 1:56 AM

Problem is HTTP/2


When requesting the site using curl (command line) You'll get this response:

curl: (92) HTTP/2 stream 1 was not closed cleanly: PROTOCOL_ERROR (err 1)


When HTTP/2 is disabled, it works again.

7 replies

Jul 19, 2016 7:14 PM in response to ottawamacman

I found a solution in the suggested Mac fixes. I was only having problems viewing content from one site (Weather Network). The solution was to go into Safari Preferences, under Privacy and list all Details. This provided a log of all sites where cookies, etc had been used. I found the Weather Network domain page and cleared all content from it. I was then able to reload the Weather Network page with no issues. I assume this would work for other similar singular sites.

NSPOSIXErrorDomain:100

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