Okay I'm guessing everyone here has experienced something like this but...

I dev for Company A and we have various other companies and clients utilize our service. Now, a client from Company B comes to us and says that they are having problems signing in. Apparently the page just tells them "Can't sign in".

"That's odd," I think to myself, "because our failed sign-in messages aren't that terse and usually tell you why."

I look on the system, client is registered under Company B and has verified their email address. All good there. My guess? Trying to sign in to the wrong site (we have a jobs site too) because that sometimes comes up first on the googs.

We get an email from client just now: "Hi, still can't sign in. Please see screenshot below."

I shit you not, she was trying to sign in to her own company's website that clearly had "Company B" written above the sign in box.