Access Keys:
Skip to content (Access Key - 0)

Q: My Outlook for PC keeps presenting the Touchstone Authentication window and will not let me into outlook.


  • You are on o365 (Exchange Online)
  • You are running Windows 10 or newer
  • You are using Outlook for your email client
  • You are able to connect to email on other clients, such as mobile devices or


  • Windows has cached outdated credential information, and Outlook attempts to use this to log in Office 365 rather than the credentials acquired through touchstone.
  • To clear these credentials, go to "Windows Settings" then "Accounts", then "Access Work or School". If there are any MIT related credentials listed, click "Disconnect", then "Yes". Do not disconnect any credentials related to the WIN AD domain.

Last Modified:

January 25, 2022

Get Help

Request help
from the Help Desk
Report a security incident
to the Security Team
Adaptavist Theme Builder (4.2.3) Powered by Atlassian Confluence 3.5.13, the Enterprise Wiki