Outlook.com won’t let me forward any emails. Why not?
Hotmail.co.uk to Outlook.com upgrades: Your questions answered
The option to forward on an email no longer has its own standalone tab, like it did in Hotmail, which has created confusion for lots of users since the Outlook.com switchover took place.

If you need to access this feature, open an email and click on the reply tab. This will result in a drop down menu appearing that features a "Forward" option.
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