why do i keep seeing exchange password required on my mac?

Hi darwinp5101,

​Thank you for using the Apple Support Communities. As I understand it, it sounds like you're seeing a prompt to enter an Exchange password.

Can you provide a little detail about what's happening? Do the prompts come up when you take a certain action? What's the exact wording of the password prompt?

When you say it's not accepted, are you seeing a response that the password is incorrect, or something else? When you say the password is verifiably correct, do you mean it seems to be accepted for the same account on a different device?

While it might depend on the answers to the above, seeing if you can replicate the issue in a temporary administrator account may be a helpful start. This would tell you if the issue is system-wide, or if it might be specific to the user account: How to test an issue in another user account on your Mac

Reply back with the testing results, and the community might be able to help further. Take care.

If the Mail ISP (or your employer's Exchange Server) is using password aging, then you will get a server initiated request to change your password. Apple Mail would intercept this request and present its own dialog requesting the password, or entry of that new password, once set up on the Mail server side.

I have an alumni email account and it uses annual password aging. The dialog from Apple Mail is slightly confusing as to the reason, and I had to call the IT staff at the University to actually change the password. Once that new password was entered into the Mail dialog, things returned to normal — until next year.