PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target checking remote for update

Experiencing PKIX errors connecting to remote repos. All efforts following KB articles are unsuccessful. Can anyone help?

2022-04-05 09:31:48,759-0400 WARN [qtp82741776-9466] XXXXXXXXXXX org.sonatype.nexus.repository.maven.internal.orient.MavenProxyFacet - Exception javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target checking remote for update, proxy repo mule-ee-releases failed to fetch rg/apache/maven/plugins/maven-surefire-plugin/maven-metadata.xml, content not in cache.

Your system doesn’t have the appropriate root certificates, or algorithms to connect to the repository.

You could try - Configuring SSL