401 Unauthorized on last step Application of Registration Wizard

You've been using K2 for SharePoint smoothly, but recently started encountering "401 Unauthorized" errors with SharePoint SmartObjects and even during the Registration Wizard's final "Application" step.

This could be caused by an expired K2 OAuth High Trust certificate.

To renew the certificate, follow the steps here:

https://community.nintex.com/k2-blackpearl-66/when-trying-to-add-the-url-on-appdeployment-exe-an-error-appears-3002?tid=3002&fid=66

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