I have been using Outlook 2016 for over a year. Now when I try to start Outlook I get a message say it can't start because the sign in value is bad. How can I get my email?
This can be a simple problem that is "your password expired" and you have to sign in using a browser to change it. This problem will not be "understood" by Outlook and may present itself as some other problem.
Given it is not an expired password, the other error may be the result of an corruption problem with the Outlook Profile that contains the account information you entered when you initially started Outlook. To fix this you want to Open the Control Panel, and look for the Mail icon. This will allow you to make a new profile and eliminate the corrupt profile.
Another option is to delete the old profile do a search for the Outlook version profile location using your search engine.
Or visit our blog for links. https://support.office.com/en-us/article/Locating-the-Outlook-data-files-0996ece3-57c6-49bc-977b-0d1892e2aacc