Showing results for 
Show  only  | Search instead for 
Did you mean: 

Expired root certificate

Hi All

I am getting issue when I try to run connectivity checks on nsm server that is given below:


Port: TCP 443
I/O Error: PKIX path building failed: Unable to find certificate chain.


Should I need to replace the certificate on mlos server?


2 Replies
Reliable Contributor
Reliable Contributor
Report Inappropriate Content
Message 2 of 3

Re: Expired root certificate


Please refer the below KB article:

Network Security Manager impact due to Sectigo Certificate Expiry on May 30, 2020 (

Was my reply helpful?
If you find this post useful, please give it a Kudos! l Also, Please don't forget to select "Accept as a solution" if this reply resolves your query!
McAfee Employee
McAfee Employee
Report Inappropriate Content
Message 3 of 3

Re: Expired root certificate


You could try and replace the certificate by performing steps in KB92951 - Network Security Manager impact due to Sectigo Certificate Expiry on May 30, 2020.

If this doesn't resolve the issue, then the recommendation is to review your proxy settings to determined whether the issue is related to the proxy which is blocking the certificates and in turn affects the SSL handshake.

Ian Bryan
Technical Support Engineer
Customer Success Group

You Deserve an Award
Don't forget, when your helpful posts earn a kudos or get accepted as a solution you can unlock perks and badges. Those aren't the only badges, either. How many can you collect? Click here to learn more.

Community Help Hub

    New to the forums or need help finding your way around the forums? There's a whole hub of community resources to help you.

  • Find Forum FAQs
  • Learn How to Earn Badges
  • Ask for Help
Go to Community Help

Join the Community

    Thousands of customers use the McAfee Community for peer-to-peer and expert product support. Enjoy these benefits with a free membership:

  • Get helpful solutions from McAfee experts.
  • Stay connected to product conversations that matter to you.
  • Participate in product groups led by McAfee employees.
Join the Community
Join the Community