You can't sign in as a different user after you receive an access denied message on a SharePoint Online site
Not sure what release of Office 365 you're using? Go to the following Microsoft website:
- Sign out of the organization for the current user account.
- Sign in again, and use the account that you want to use to access the resource.
You may encounter this issue if you've received the latest SharePoint Online service update.
Still need help? Go to the Office 365 Community website.
Article ID: 2787034 - Last Review: 02/27/2013 04:23:00 - Revision: 5.0
- o365 o365a o365e o365p o365m o365062011 pre-upgrade KB2787034