https://community.cloudera.com/t5/Support-Questions/Nifi-not-able-to-load-available-buckets-in-nifi-registry/m-p/330327#M230647 <P>Thank you for helping Matt but I have tried to authenticate my Nifi, still not worked. My nifi is not clustered.</P><P>I checked the Nifi keystore, console printed this output.&nbsp;</P><P>Alias name: 1<BR />Creation date: Mar 6, 2020<BR />Entry type: PrivateKeyEntry<BR />Certificate chain length: 3<BR />Certificate[1]:<BR />Owner: &lt;owner DN&gt;<BR />Issuer: CN=GeoTrust RSA CA 2018, OU=<A href="http://www.digicert.com" target="_blank">www.digicert.com</A>, O=DigiCert Inc, C=US<BR />Serial number: &lt;serialnumber&gt;<BR />Valid from: Tue Feb 25 03:00:00 EET 2020 until: Mon Apr 25 15:00:00 EET 2022</P><P><BR />I have added the owner DN to Nifi Registry as an user (checked whitespaces carefully). And gave necessary permissions like proxying requests but still no effect.&nbsp;</P><P>&nbsp;</P> Tue, 16 Nov 2021 14:40:04 GMT Yemre 2021-11-16T14:40:04Z