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Nico WrennNico Wrenn 

Self-signed certificate expired - what happens when I create a new one?

I am working on settup up Single Sign-On for a connected app, using Salesforce as the identity provider. We currently have one existing connected app. When I go to the Setup --> Identity Provider page in setup, I can see that the currently selected certificate is expired. What happens if I select the new self-signed certificate that I just created? Will this break the connection to the existing connected app, and if so, how do I fix that? Thanks for your help!
expired cert
NagendraNagendra (Salesforce Developers) 
Hi Nico,

A self-signed certificate is a bit different from the CA-signed certificate. I faced a similar issue in the past and  I renamed the expiring one and created a new self-signed cert with the same name as the original and things started running as usual.

For more information please refer to the below help document which might help you further with reference to the above issue. Please let us know if this helps.

Kindly mark this as solved if the reply was helpful.