Every time I log in to iCloud it says that my Apple ID or password is incorrect. How do I fix this?

[iMore Question]

After updating software (not sure if it is just a coincidence), I am now unable to log into my iCloud on both my Macbook and iPhone. I reset the password (after answering my security questions) and the password still did not work. I have tried resetting my iPhone etc. and nothing has worked. If anybody has any tips on why this may be and how to fix it, that would be fantastic. Thank you!

 

[kch50428]

Are you certain you're entering the password exactly as you did when changing it?