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How to fix "550 5.3.4 Requested action not taken..." error » Ricmedia PC Help
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 …