Mimecast Login Repair for SAML issue for Chrome Users
Please follow each step to see if this resolves the SAML error:
Issue: User says they can't log in, or they are getting a SAML issue in Mimecast.

- Close all your browser windows and restart your browser (ie. Chrome, Firefox, Edge and Safari)
- Clear cache/cookies
Open Chrome: Launch the Google Chrome browser on your computer. To clear your cache in Google Chrome. Click the Menu in the upper right. Click on History.

- Choose Clear Browsing Data.
-
The most effective setting is to clear all browsing history for all time and to clear browsing history, download history, cached images and files, and cookies.

- Close the browser and restart to try the login again.
Here are instructions to clear your cache in Firefox.
For any additional Mimecast Information, see Reporting and Managing Suspicious Email Using Mimecast.