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This evening I had cause to log in to Cross Validated, a site I hadn't visited before, and I found myself unable to login.
After clicking on
log in with Stack Exchange I wait and wait and the username and password boxes never appear.
Thinking it was my browser, I cleared out my cache, and tried again, with the same result. The browser itself is Chrome 23.0.1271.95 m, on Windows 8, which claims to be up to date.
I then visited a few other SE sites. On sites I've logged in to before, I was logged back in automatically, click here to refresh the page. On sites I haven't logged in to before, such as User Experience, I got the same result as Cross Validated.
At that point I did a global logout and then cleared any remaining cookies I could find. When I went back to attempt to log in again, I could no longer log in to any Stack Exchange site.
On the computer which is failing to log in, I hit F12 and looked at the Network tab. When I click
log in with Stack Exchange a number of requests fly by; the last one being
POST /users/login/global, which returns a 404 Not Found.
I also see the following additional error in the console:
Port error: Could not establish connection. Receiving end does not exist. chromeHidden.Port.dispatchOnDisconnect
I suspect these may be related to my problem.
(I am posting this from a different browser from which I was already logged in; I'm quite afraid to attempt logging out... And I'm just a sysadmin, not that much of a developer anymore, so if I forgot anything important, please let me know.)