Facing the Outlook certificate error? Resolve It Quickly

Although Outlook is a great email service, its users also encounter various errors at different points of its usage. Its security error occurs when the user tries to link to an insecure email server. A message shows the Outlook error the server you are linked to is utilizing a security certificate that can't be verified. In this article, you'll get to know the reasons behind the Outlook certificate error and ways by which you can fix it.

 

Why Does the Outlook Certificate Error Occur?

This error can come up due to numerous reasons. They are given below.
  • The major reason for it is the invalid security certificate. It's important for the mail server to have a valid security certificate.
  • Wrong time and date can also lead to this error in Outlook. If the date is wrong and goes beyond the certificate's validity, MS Outlook will show this error message.
  • Each server has a specific certificate that's assigned to its domain name. Using the old domain name can cause you to encounter this error.
  • Typing the wrong hostname is another reason for this error to occur. A wrong hostname will not enable the establishment of a connection between the email client and the server.

What Are the Various Fixes for Outlook Certificate Error?

This error can be resolved by following a few troubleshooting techniques. They only require a slight technical knowledge on your part.

See that the certificate name and the mail server are the same.

It is the first step for establishing a connection between the server and the email client. It's important to have the mail server's name on the security certificate's name.
  • When this error appears, tap 'View Certificate.'
  • Choose the option of 'Issued to Name' and see if the name on the certificate is similar to the mail server.
  • If you find any discrepancy, modify it and restart Outlook.

 

Use the domain name as the mail server.

The hosting providers host numerous domains. In shared hosting, they give the same server for different domains. Consequently, the security problem can come due to the hosting companies not renewing the SSL certificate for each domain.

So, it's advised to utilize your hosting company's domain name rather than your domain name.

 

Use the non-SSL ports.

In universities, institutions, and companies, many mail servers that are popular are blocked. These servers include IMAP 993, POP 995, and SMTP 465. In this case, you can use unsecured ports. They include POP 110, IMAP 143, and SMTP 587. They aren't blocked but are prone to data theft.

 

Modify the outgoing SMTP port

Some internet service providers, due to fear of spamming, block SMTP port 25. To switch the server from this port to another, follow these steps.
  • Tap on 'File' in MS Outlook.
  • Choose 'Info' and tap on the 'Account Settings.'
  • Choose your email and tap 'Change.'
  • Tap on 'More Settings' and navigate to 'Advanced.'
  • Modify the 'Outgoing SMTP port' and tap 'OK.'

 

Final Words

The Outlook certificate error won't make you feel concerned, now that you know the various ways to fix it. Implement them as mentioned in the instructions. For further assistance, contact the Outlook customer service.

 

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