NetWorker: Unable to log in to NetWorker Web UI (NWUI) when launched from the NetWorker server

Summary: Unable to log in to NetWorker Web User Interface (NWUI) launched from the NetWorker server. "Failed to authenticate user administrator with the provided password on Authentication Server ...

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Symptoms

Unable to log in to NetWorker Web UI (NWUI) when launched from the NetWorker server.
Error in C:\Program Files\EMC NetWorker\nsr\authc-server\tomcat\logs\nwui.log:

[https-jsse-nio-9090-exec-7] INFO  c.e.n.c.n.impl.GlobalApi - Authenticating user administrator on authentication server <Server name>.
[https-jsse-nio-9090-exec-7] ERROR c.e.n.c.n.impl.GlobalApi - Failed to authenticate user administrator with the provided password on Authentication Server <Server name>. javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

NetWorker Management Console (NMC) authentication and nsrlogin works fine.
Login works when NWUI is launched from another host.
 

Cause

The tomcat certificate is missing from the Java keystore.

Resolution

Import the tomcat certificate "emcauthctomcat.cer" in the Java keystore.

NOTE: The below examples demonstrate when the NetWorker Runtime Environment (NRE) is used for NetWorker. If you are using Oracle Licensed Java instead, adjust the paths accordingly.
  • NetWorker 19.12.x (JRE 8.x) and prior:
cd "C:\Program Files\NRE\java\jre-#.#.#\bin"
.\keytool -import -alias emcauthctomcat -keystore ..\lib\security\cacerts -storepass changeit -file "C:\Program Files\EMC NetWorker\nsr\authc-server\tomcat\conf\emcauthctomcat.cer"
  • NetWorker 19.13.x (JDK 17.x) and later:
cd "C:\Program Files\NRE\java\jdk-#.#.#\bin"
.\keytool -import -alias emcauthctomcat -cacerts -storepass changeit -file "C:\Program Files\EMC NetWorker\nsr\authc-server\tomcat\conf\emcauthctomcat.cer"

Restart the NWUI service (PowerShell syntax): net stop nwui ; net start nwui

Additional Information

NetWorker Management Web UI (NWUI): Triage and Troubleshooting Guide

Affected Products

NetWorker

Products

NetWorker Family
Article Properties
Article Number: 000193323
Article Type: Solution
Last Modified: 16 Jan 2026
Version:  4
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