# 4.8.16+1 update does not recognize JRE **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [December 9, 2021, 9:23pm UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294 "2021-12-09T21:23:31Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Branden\_Spikes](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@Branden\_Spikes](https://community.wowza.com/u/Branden_Spikes)\ **Post date:** [December 9, 2021, 9:23pm UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294/1 "2021-12-09T21:23:31Z")
when attempting to update 4.8.14+9 to 4.8.16+1, I have executed the update.sh file, which returns this: _Verifying running as administrative user_ _Verifying Java 9 or greater is available_ _utils.sh: line 21: [: 9-internal: integer expression expected_ _Found Java version: ‘9-internal’ at path: ‘/usr/bin/java’_ _Wowza Streaming Engine 4.7.8 requires a Java 9 or greater VM to be installed._ _Before attempting to run the server, please install a Java 9 compatible VM._ _Wowza Streaming Engine won’t start without a Java version between 9 and 12._ …I have verified that JRE 9.0.4 is installed. What gives? ---
**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\ **Post date:** [December 9, 2021, 10:24pm UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294/2 "2021-12-09T22:24:25Z")
Hmmmm…hard to know why it’s not recognizing it without a complete review of your files. You would need to submit a support ticket so we can quickly identify what happened. In the meantime, I can share this troubleshooting doc: [https://www.wowza.com/docs/manually-install-and-troubleshoot-java-on-wowza-streaming-engine](https://www.wowza.com/docs/manually-install-and-troubleshoot-java-on-wowza-streaming-engine) The only other thing I can think of is if you used your own JRE instead of the one we provide, it gets a little messed up sometimes. A final suggestion is to roll back and try to update it again. That has fixed issues for people before. But, please send a support ticket so we can double check our end of things with the new version release. Thanks… ---
**Author:** ![Branden\_Spikes](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@Branden\_Spikes](https://community.wowza.com/u/Branden_Spikes)\ **Post date:** [December 9, 2021, 10:32pm UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294/3 "2021-12-09T22:32:23Z")
Thank you Rose- I don’t think we rolled our own Java for this, pretty sure it’s a pure stock install. If I decide to install the new version from scratch, will it write over the old version or install side-by-side? ---
**Author:** ![Connessione](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Connessione](https://community.wowza.com/u/Connessione)\ **Post date:** [December 10, 2021, 8:41am UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294/4 "2021-12-10T08:41:39Z")
Some suggestions here : - Make sure you don’t have multiple java versions on same system - Try to upgrade to java 11 and try again - Try installing appropriate version of JDK instead of just JRE ---
**Author:** ![Branden\_Spikes](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@Branden\_Spikes](https://community.wowza.com/u/Branden_Spikes)\ **Post date:** [December 29, 2021, 7:05pm UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294/5 "2021-12-29T19:05:12Z")
As it happens, I did in fact have another Java version on there. Thanks! ---
**Author:** ![Connessione](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Connessione](https://community.wowza.com/u/Connessione)\ **Post date:** [December 29, 2021, 8:46pm UTC](https://community.wowza.com/t/4-8-16-1-update-does-not-recognize-jre/94294/6 "2021-12-29T20:46:27Z")
👍 glad to hear that you figured it out !!