Windows Tips

Outlook 2010 SMTP port 465 and 587 do not work

A client was using Outlook 2010 on Windows 7 (I know, support ends Jan 14, 2020) and could not setup email SMTP settings with port 465 (SSL) or 587 (TLS).

The error was “none of the authentication methods supported by this client are supported by your server

The clients email was hosted with cPanel. It is recommended not to adjust the cpanel SMTP settings to less secure for this to work.


Configure Windows 7 to use TLS version 1.2

  1. Install KB3140245 from Microsoft Update Catalog.
  2. Right click on the Start button and go to Run (Or Press Windows Key + R). Type regedit.exe
  3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
  4. Select the WinHttp key
  5. If DefaultSecureProtocols is not there create a new DWORD (32-bit) named DefaultSecureProtocols
  6. If DefaultSecureProtocols already exists modify it and make sure the entry is A00
  7. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\
  8. Create a key called TLS 1.1
  9. Create a key inside that called Client
  10. Create a DWORD (32-bit) called DisabledByDefault
  11. Right click and modify the value and change it to 0
  12. Repeat Step 8-11 however name it TLS 1.2
  13. Restart to take effect.

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  • John Nawotka


    Great post!

    This describes the exact problem that I am having – Outlook 2010 on Windows 7 PC. My Email Service provider sent through new server details either using SSL – Port 465 or Non Secured using Port 587. When I read your steps here I thought that it was the answer I was looking for.

    However, after following your steps it still does not work – giving me the same error:

    “none of the authentication methods supported by this client are supported by your server”

    By any chance do you have any other suggestions to resolve this?

    Thank you so much.

    best regards

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    • TSF Webmaster

      Hi John,

      Thank you. Have a read at these instructions which are similar to mine –—configuring-email/1403_how-to-enable-tls-v1.1v1.2-for-windows-78-and-outlook-2007201020132016.html
      These turn on TLS v1.1 and v1.2 which should help fix the problem.
      Make sure you restart and try afterwards too.

      Hope this helps.

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