Note: This is related but not a duplicate: Message signature was incorrect
When attempting to log in to any Stack Exchange site with any login option from Windows, I receive a "Message signature incorrect" error.
I've tried with Google, Stack Exchange OpenID, and MyOpenID
I've tried with both my account/email, and an account I began to create for my brother. Neither worked.
I've tried from every single browser I have and can find. I have cleared the cache, cookies, and all settings on each.
I've tried from two machines, both Windows 7, on the same network.
Edit:
Regarding network configuration (I would be paranoid about posting it, but any site I visit can get this information)...
- I use no proxy at all. At least none I'm aware of.
- The ISP is Comcast. IPv4, if that means anything.
- Home connection, not work.
- I use Covenant Eyes on both versions of Windows. In typing this, I realize that very well might be the problem, and I'll try to test on Windows without it ASAP.
What's going on?
 
you're adding toStack Exchange
names, but I really feel it looks worse on small displays...)