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Outlook is Unable to Connect to The Proxy Server – How to Resolve

MS Outlook is considered as one of the best email client for most of the corporate and home computer users. The organizations mostly prefer MS Outlook because it eases the use of an email account on the computer system with great features for easy access and it also organizes the mail attributes as well. But there are times whenever the MS Outlook is in offline mode the users are encountered with various errors and face many troubles which completely blocks the access to email data. One such error is Outlook is unable to connect to the proxy server. Here, we will discuss about the error in details.

Outlook is Unable to Connect to The Proxy Server – Error Messages Received

There are various times where the MS Outlook is connected to a server using RPC (Remote Procedure Call) connection or using the HTTP connection. Here are the following error messages generated:

Reasons Why This Outlook is Unable to Connect to The Proxy Server Error Occurs

The reasons why these errors occur in MS Outlook is as follows:

Solutions to Overcome the Outlook is Unable to Connect to The Proxy Server Errors

The solutions for overcoming the errors in MS Outlook is as follows:

1. Examination of the Certificate

In case the user receives the error 1 or error 2. In that case, it’s recommended to examine the certificate properly and thoroughly. The user should check two things in the certificate. First, look that the certificate should not be expired and second, the information which is mentioned in the subject field should match the name of the site. The steps for examining the certificate is as follows:

2. Installing Trusted Root Certificates

The steps for installing the trusted root certificates are mentioned below:

3. Disabling third-party Browsers and Add-Ins

The steps to remove the errors by disabling the third-party browsers and add-ins is as follows:


MS Outlook is one of the most used email clients in today’s modern organization. While working on Outlook is quite challenging for the users also. So there are times where the certain errors stop the working of Outlook application. But to counter it we mentioned above the few steps which the users can easily solve the Outlook is unable to connect to the proxy server error they are getting while they are working on MS Outlook. After that, the user can connect the MS Outlook to the proxy server.