Using classic Outlook for Windows in business environments
@Anne Marie did you ever receive a reply to this? I received a very concerning email today and there is no option to report scam or phishing!!
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Microsoft Support provides the following information for reporting Phishing or suspicious behavior:

I do not show that on my Outlook page when I have a phishing mail to report. Is it something I need to load? All I have is to put the message in Junk.
Using classic Outlook for Windows in business environments
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@Anne Marie did you ever receive a reply to this? I received a very concerning email today and there is no option to report scam or phishing!!
Please close this out! I have responded and this keeps going on for weeks now. This is annoying for sure.
Thank you,
Rick
I can't find it either and this response isn't helpful either. Perhaps Microsoft doesn't want to know about the phishing emails????
Hi Ricky,
You may have got a solution, but not all of us do. I still don't have the option posted above as there is no report phishing button in my Outlook, and I've no idea why not. Until I do, I have no way of reporting this to Microsoft.
I've received a threatening email, stating that if I dont send the request amount of money that all of my contacts and platforms will receive inappropriate content.
I can't report the mail, because the sender has been spoofed as being sent from my own MS account. I've also noticed that my MS account sign in is under some sort brute force attack. I've had two-step verification for a while already and just to be sure I've changed my MS password.
What else can be done to stop the phishing emails and brute force attack on my MS account?