Sent an email out in work informing everyone that we had pushed updates out to all Windows PC's.

Got the following phone call 10 minutes later:

"Hi, I can't log into the banking account app on my iPhone. Did you do something to it with your updates?"

"Nope. They were PC updates."

"Well, I'm sorry but you're wrong. It must be you! It was working yesterday."

"Again, it's not us. What's the error message you're getting on your app?"

"Invalid password"

".....then could it just be that you're entering an invalid password?"

"No, I know the password. I only changed it yesterday!"

"So it was working before you changed the password?"

"That's what i said!
I'm telling you, it's your updates."

"Okay but before we go 'troubleshoot' it, how about ringing your bank firs-"

"Oh look, it doesn't matter if you don't want to help, I don't have time for this!
I'll ring your boss and he'll uninstall the updates for me and fix the app." *hangs up*

I just LOVE posting questions in online forums and getting some amazingly helpful human being answering; "No idea, sorry."

WELL THANK YOU VERY MUCH FOR YOUR AMAZING INPUT!!!