I have tried both 'standard' connection with 'allow less secure apps' in the Google settings as well as 2-step verification with an app password. The IIS Crypto solution has no effect at all. Three (or four) days ago Outlook stopped working with the error message quoted in the initial message, with an Outlook 2010 that has been working for years connecting with IMAP to gmail. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams. If you have feedback for TechNet Subscriber Support, Click here to learn more. Please remember to mark the replies as answers if they helped. Please check the setting on the web mail to see if the related option is enabled.įor example, following is the setting for Gmail.īesides, do you have any anti-virus programs running? Please try temporarily closing them to see the result.Ĭreate a new profile in case the old profile is corrupted.Īny updates, please feel free to tell me. Under Outgoing Server tab, select “Use same settings as my incoming mail server”.īased on my knowledge, for some email types, we have to enable POP3 or IMAP access before configuring in Outlook. Under File > Account Settings > Account Settings, please double click your account and choose More Settings. Please first check your account settings. Please let me know any other information that is needed to troubleshoot this issue. Issue is resolved, I would prefer to connect using SSL/TLS. This allows me to connect and see emails, however when I try to send emails I get the following error: 503 Valid RCPT command must precede DATA. I also tested using IMAP without SSL/TLS using port 143 and outgoing port 587. I have called my ISP to make sure they are not blocking those ports. Contact your mail server administrator or Internet service provider (ISP) for additional assistance.” “Send test email message: Your server does not support the connection encryption type you have specified. “Log onto incoming mail server (IMAP): A secure connection to the server cannot be established.” I have tested using both IMAP and POP settings using SSL/TLS (ports 993 and 465) and both of them give me the same error message: This is occurring on both of my computers and they are running Windows 7 (64-bit) with Outlook 2016 (32-bit). To this email server with outlook is having the issue I am. However, I can connect directly to web mail on a browser and I can connect using my phone with no issues. The email server I connect to for email was recently moved, and now that I try to connect using outlook it is not working.

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