Dear Apache NiFi Developers,
I am experiencing issues with getting Apache NiFi 2.2.0 to run on my Windows 11
system. Despite following the installation steps, I am unable to access the
NiFi UI at http://localhost:8080/nifi. Below are the details of my setup and
the errors encountered.
System Information:
- OS: Windows 11 (64-bit)
- NiFi Version: 2.2.0
- Java Version:
- Initially tried JDK 21 (Eclipse Adoptium jdk-21.0.6.7-hotspot)
- Switched to JDK 17 (jdk-17.0.14+7)
- Installation Directory: C:\Users\E-TECH\Downloads\nifi\nifi-2.2.0
Steps Taken:
- Downloaded and extracted NiFi 2.2.0.
- Set JAVA_HOME environment variable to point to JDK 17.
- Verified Java installation using java -version, which returned the correct
JDK version.
- Attempted to start NiFi using nifi.cmd start from
C:\Users\E-TECH\Downloads\nifi\nifi-2.2.0\bin.
- Checked NiFi status using nifi.cmd status, which showed that the
application process had stopped.
- Reviewed log files for errors.
Errors Encountered:
nifi-app.log:
2025-03-10 13:20:54,164 ERROR [main] org.apache.nifi.web.server.JettyServer
Failed to start Server
nifi-bootstrap.log:
Error: LinkageError occurred while loading main class
org.apache.nifi.bootstrap.BootstrapProcess
java.lang.UnsupportedClassVersionError:
org/apache/nifi/bootstrap/BootstrapProcess has been compiled by a more recent
version of the Java Runtime (class file version 65.0), this version of the Java
Runtime only recognizes class file versions up to 61.0
Command Line Output:
C:\Users\E-TECH\Downloads\nifi\nifi-2.2.0\bin> nifi.cmd start
JAVA_HOME=C:\Program Files\Eclipse Adoptium\jdk-21.0.6.7-hotspot
NIFI_HOME=C:\Users\E-TECH\Downloads\nifi\nifi-2.2.0
2025-03-10 13:03:55,959 INFO [main] org.apache.nifi.bootstrap.Command
Application Process [13608] started
2025-03-10 13:03:55,960 INFO [main] org.apache.nifi.bootstrap.Command Bootstrap
Process Running
Troubleshooting Attempted:
- Switched Java versions from JDK 21 to JDK 17, ensuring compatibility with
NiFi 2.2.0.
- Disabled the firewall temporarily to rule out port blocking.
- Checked for conflicting processes using netstat -ano | findstr :8080 to
confirm no other service was using the port.
- Tried running NiFi manually using nifi.cmd run instead of nifi.cmd start
to observe live logs.
- Looked for PID files inside the NiFi directory but did not find any (run
folder missing).
Request for Assistance:
- Why is NiFi failing to start despite having the correct Java version?
- Are there additional dependencies or configurations needed on Windows 11?
- Is there a known issue with NiFi 2.2.0 on Windows, or should I downgrade
to an earlier version?
Any guidance or troubleshooting steps would be greatly appreciated.
Thank you for your support!
Best regards
