Sometimes while sending an email, Outlook gives error code 20 with the following error message:
“Outlook is unable to connect to the proxy server (error code 20).”
It usually happens when Outlook is not able to connect properly with the proxy server. It is the most annoying error message you will see when you are using Microsoft Outlook. This error can be caused by many reasons which are explained below.
You can try the below fixes to resolve the issue.
The very first thing is to check your date and time settings. If they are not set correctly, you need to here is how you can configure it in Windows 10.
System File Checker (SFC) will fix any corrupted files on your computer or laptop.
There is a possibility that error code 20 might pop up due to a virus or malware present in your system. Therefore, perform a deep scan using an antivirus software. If there are any virus detected, delete them and restart your system.
If you do not have any antivirus in your system, you can also use the Windows Defender which comes with Windows 10.
Check your Firewall settings and see that it is not blocking Microsoft Outlook from connecting to the server.
Uninstall MS Outlook from Control Panel. You can also it by pressing Win + R key and then typing ‘appwiz.cpl’ in the Run window. Then select Outlook and click on Uninstall button.
Once it done, install a fresh copy of Outlook on your system.
The above points will help you in using Outlook normally and resolving Outlook error code 20. So, what are your views on this? Do let us know in the comments below!