# Wowza streaming engine manager service did not start
**URL:** https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664
**Category:** Wowza Streaming Engine
**Created:** [March 7, 2022, 7:31am UTC](https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664 "2022-03-07T07:31:12Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@yoon\_kyungsik](https://community.wowza.com/u/yoon_kyungsik)
#### Post date: [March 7, 2022, 7:31am UTC](https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664/1 "2022-03-07T07:31:12Z")
hello. dear.
i set a wowza straming program, many server. however especially i cant setup this server.
same java version, and anything is same environment so i dont know how can i fix it.
i guess in this server there r old version wowza.
4.2.0 and 4.5.0 etc.
so i just this port number 8088 is crushed ?
plz. let me know how can i fix it!
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### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [March 7, 2022, 6:12pm UTC](https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664/2 "2022-03-07T18:12:19Z")
Hi, not sure I understand your references to 4.2 and 4.5.0, those are extremely old and outdated versions of Streaming Engine. We are on [Engine version 4.8.17](https://www.wowza.com/docs/wowza-streaming-engine-4-8-17-release-notes) now and that requires a Java version of 9-11.
There have been so many breaking changes since the versions you mentioned, I can’t imagine it still working on your local environment you shared but let me show you how you can do some troubleshooting: Click on the link below.
[https://www.wowza.com/docs/wowza-streaming-engine-4-8-17-release-notes](https://www.wowza.com/docs/wowza-streaming-engine-4-8-17-release-notes)
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### Author:  [@yoon\_kyungsik](https://community.wowza.com/u/yoon_kyungsik)
#### Post date: [March 8, 2022, 4:17am UTC](https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664/3 "2022-03-08T04:17:32Z")
hi.
i setup a latest version of wowza, however there is same error.
i cant stream the file as a windwos service.
java version is proper and everything is ok so i dont understand what happen.
plz help me.
os : windows server 2012 R2
and java version that is recommend ur guid.
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### Author:  [@Connessione](https://community.wowza.com/u/Connessione)
#### Post date: [March 11, 2022, 7:53pm UTC](https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664/4 "2022-03-11T19:53:42Z")
Best thing to do would be to uninstall old version and then install the latest version to try out. In your case it could be that ports are already in use or the system process for old and new collide.
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### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [March 16, 2022, 6:05pm UTC](https://community.wowza.com/t/wowza-streaming-engine-manager-service-did-not-start/94664/5 "2022-03-16T18:05:14Z")
You can also make sure you are pointing Engine to the correct version of Java that you’re using which I can see in your screenshot is 10. **Important:** Wowza Streaming Engine version 4.7.8 and later requires OpenJDK Java SE JRE 9.0.4 at a minimum, but supports up to Java version 12.
You have to instruct Engine to what version you are using since the default is 9 in Streaming Engine at the moment.
The steps do this are here:
[https://www.wowza.com/docs/manually-install-and-troubleshoot-java-on-wowza-streaming-engine#instruct-wowza-streaming-engine-to-use-a-specific-version-of-java3](https://www.wowza.com/docs/manually-install-and-troubleshoot-java-on-wowza-streaming-engine#instruct-wowza-streaming-engine-to-use-a-specific-version-of-java3)