office 2016 outlook will not connect to server

Wait for the process, and once it is over click on the Finish button.Now, click Browse to select the Trusted Root Certification Authorities and click on OK.

Check the box Place all certificate in the following store.

In the Certificate dialogue box, click on the Install Certificate option.

If you are getting error notification saying that the security certificate is not from a trusted authority, then you need to install a trusted root certificate, let’s see how: If not, it’s expired, or you need to change the site name. If the date is valid as per the information given in details, and the subject matches the site name, then your certificate gets a green signal.

Here comes the most important part, note the information from Valid to and Subject fields.

Now, you will find the padlock icon, double-click on it, and select the Details tab.

Start with opening the Microsoft Internet Explorer and connect to any secure and trustworthy server.

If you are receiving error notification saying that there is a problem with the security certificate of the proxy server or it is invalid, then you need to check the certificate by following the below-mentioned steps. How to fix is “Outlook is Not Able to connect to the proxy server” error?

Due to the intervention from a third-party add-in.

Non-availability of trusted Certification Authority at the root.

When you are trying to connect to the server, and it is asking for Certification Authority.

Some of the few reasons that cause this error are listed below: If you are getting any of the notification mentioned below, know that you are facing this very same error. Outlook is unable to connect to this server. The name on the security certificate is invalid or does not match the name of the site.

There is a problem with the proxy server's security certificate. The security certificate is not from a trusted certifying authority. There is a problem with the proxy server’s security certificate. Outlook is unable to connect to the proxy server (Error-Code). The name on the security certificate is invalid or does not match the name of the target site. Outlook is unable to connect with this server. The error messages are always descriptive in nature and they mention the cause of the error itself. Error Notifications for Proxy Server Connection Issues The connection is configured between the platforms using some secure SSL certificates and if there is problem with these certificates, then the user will have to face different kinds of errors based on type of problem in the certificates. MS Outlook makes a connection with the Exchange Server through HTTPS or RPC connection.

Office 2016 outlook will not connect to server