You can logon with that password into that e-mail account using the webmail in www.outlook.com ?
And in https://account.microsoft.com/account ? Then it isn't wrong indeed. Then contact Microsoft.
I buy computer equipment for a small private school, and last spring I bought a dozen laptops equipped with MS Office 2016. Now I am trying to activate them, and they insist on me providing a Microsoft e-mail account (which I have), but when I tell it the account password it tells me that the password is wrong.
The password is not wrong. So what is going on, and how do I proceed with activation?