Configuring preferences and options in Outlook.com
Hi Everyone,
We apologize for the inconvenience if you didn't like the new Outlook interface and that you don't have the option to switch back to Hotmail interface.
I can only imagine how frustrating you are that the option was disabled. We always welcome useful ideas to improve services Microsoft offers to its customers. If you like, you can go to our feedback page and post it as a suggestion.
You may also check this helpful article, **My Hotmail account was upgraded to Outlook.com** to have more ideas about the upgrade.
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Thank you.