I'm forced to use the Outlook Web App at work... To make it easier to switch between emails and the calendar, I would like to open each in its own tab.

Simply opening a new tab and going to the page doesn't work since it says:

There was a problem opening your mailbox. You may have already signed in to Outlook Web App on a different browser tab. If so, close this tab and return to the other tab. If that doesn't work, you can try:

  • Closing your browser window and signing in again.
  • Deleting cookies from your browser and signing in again.

Is there a work-around?

2 Answers 2


It just occured to me that I can open a private browsing session and login again. That gives me two independent browsers so I can keep different parts of the web app open in each.

It's not ideal, though, since I have to login again and since I would prefer to have two tabs in a single browser window.


This approach worked for me . . .

  1. Copy your Outlook Web App URL from your address bar
  2. Open a new tab
  3. Paste the URL into the new tab
  4. Change the end of the URL from /mail to /calendar

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