If you are setting up your email client to access your Hotmail or Outlook.com email account and are receiving the following error: 550 5.3.4 Requested action not taken; We noticed some unusual activity in your Hotmail account. To help protect you, we've temporarily blocked your account Then follow these instructions to unblock your Hotmail or Outlook.com account: Sign-in to your Hotmail or Outlook.com account At the top-right corner, click your name , then click the Account settings menu … [Read more...]