Have you ever faced a Login issue that make no sense?

🙋 Questions
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1

Recently I encountered a frustrating login issue with Great Learning.

What’s the weirdest bug you have found in Authentication?

2

A couple of Login issues come to mind, although they don’t relate to the authentication.

  1. All the machines in our test lab could log into a website except one. On that machine, the Login page just reloaded, regardless of whether you submitted the correct or incorrect login details. There was no error message. It turned out to happen because the machine’s clock was wrong. The website was setting a cookie, but the incorrect time was causing it to expire immediately. Obviously, this error could have been handled better, but it’s interesting that this isn’t a test case I would have thought of beforehand.

  2. On another project, some machines could log into a website and some could not. It was even possible to log in with one browser on a machine, but not with a different browser on the same machine. This was about 15 years ago, when Adobe Flash was still in use and the website was using a JavaScript framework that did Flash detection. Ordinarily, websites would be designed to display some sort of warning dialog if Flash was not installed, but that branch of the logic didn’t go anywhere in this case because the website did not have any Flash content. The result was that the Login form worked perfectly if Flash was installed, but a JavaScript error occurred (preventing the form from working) if Flash was not installed, even though the website didn’t need it.