Table of Contents
Problem
In Exchange server environment, if you want to log into Outlook Web App, you need to use the Domain\Username format, like:
![Bg1105](https://bonguides-1e199.kxcdn.com/wp-content/uploads/2022/07/bg1105.png)
Domain\Username is not convenient for users. So you need to change the format to simply Username?
Solution
1️⃣ Log into the Exchange Admin Center > Servers > Virtual Directories > Locate OWA (Default WebSite) then double click on it to edit.
![Bg1106](https://bonguides-1e199.kxcdn.com/wp-content/uploads/2022/07/bg1106.png)
2️⃣ Select Authentication tab.
- Under Use Forms Based Authentication
- Select User name only option.
- Browse | Select your domain then save the changes.
Note
Note: If you want users login using full email address like [email protected]. Let select User principal name (UPN) option.
![Bg1109](https://bonguides-1e199.kxcdn.com/wp-content/uploads/2022/07/bg1109.png)
3️⃣ Now on the server that’s hosting the OWA Website you need to Restart IIS (Internet Information Services).
[PS] C:\>iisreset.exe
Attempting stop...
Internet services successfully stopped
Attempting start...
Internet services successfully restarted
Finally, users can login into OWA using username only instead of Domain\Username.
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