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 Outlook error code 8 : Outlook is unable to connect to the proxy server

How To Fix Outlook Error Code 8


This Outlook error message is triggered when you are trying to send or receive emails from Outlook, through a proxy server. There is a problem with the proxy server's security certificate". The certificate may be invalid or revoked. The certificate does not match the name of the site. A third-party add-in or a third-party browser add-in is preventing access.


 

Your Windows root certificates are outdated, open Windows Update and look for updates to the Root Certificates list. Mark these updates and install them.   You are using a self-signed certificate, By default, a self-signed certificate is added to the Intermediate Certification Authorities. You have remove it from there, then import it to the Trusted Authorities list


  

Proxy server security certificate error code 8
Outlook is unable to connect to the proxy server error code 0 Outlook error code 80000000
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Outlook is unable to connect to the proxy server error code 10 exchange 2013
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Microsoft Outlook Error Code 8
 

To fix Outlook Error Code 8, create and download a digital certificate, install digital certificate on the Exchange server.