# Wowza Server Crash possible? **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [January 11, 2015, 3:19am UTC](https://community.wowza.com/t/wowza-server-crash-possible/40151 "2015-01-11T03:19:59Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![dogan\_dogan](https://avatars.discourse-cdn.com/v4/letter/d/58956e/32.png) [@dogan\_dogan](https://community.wowza.com/u/dogan_dogan)\ **Post date:** [January 11, 2015, 3:19am UTC](https://community.wowza.com/t/wowza-server-crash-possible/40151/1 "2015-01-11T03:19:59Z")
Dear Wowza Community, is it possible that Wowza can crash the entire Server & Operating System? Our server is crashing every 3-5 days and we dont know why. thank you for your time and help kind regards ---
**Author:** ![Paul\_Shields](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/paul_shields/32/390_2.png) [@Paul\_Shields](https://community.wowza.com/u/Paul_Shields)\ **Post date:** [January 16, 2015, 4:11pm UTC](https://community.wowza.com/t/wowza-server-crash-possible/40151/2 "2015-01-16T16:11:27Z")
> Dear Wowza Community, > > is it possible that Wowza can crash the entire Server & Operating System? > > Our server is crashing every 3-5 days and we dont know why. > > thank you for your time and help > > kind regards Hi, It is extremely unlikely that Wowza will crash the entire OS. If you can describe the OS you are running, and the symptoms (machine reboots, shows blue screen etc) that may help pinpoint the issue. Paul ---
**Author:** ![Lee\_Wickham](https://avatars.discourse-cdn.com/v4/letter/l/e495f1/32.png) [@Lee\_Wickham](https://community.wowza.com/u/Lee_Wickham)\ **Post date:** [January 11, 2015, 12:38pm UTC](https://community.wowza.com/t/wowza-server-crash-possible/40151/3 "2015-01-11T12:38:31Z")
Hi oomworld, While i think it is highely unlikely that wowza could be causing your seerver to crash, in this buisness i have learnt never to say never and expect the unexpected xD First thing we will need to know in order to start to acertain what is happening is he following information: **Debug Information Request:** - The Server operating system your using (Name & Version/Build) e.g (Windows Server 2012 R2 Standard Edition, CentOS 6.5/7, Ubuntu Server 14.0.0 e.t.c). - Any Server log or dump files that are being generated because of the crash. - Wowza Log Files. ---
**Author:** ![Jason\_Hilton](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/jason_hilton/32/437_2.png) [@Jason\_Hilton](https://community.wowza.com/u/Jason_Hilton)\ **Post date:** [February 18, 2015, 11:51am UTC](https://community.wowza.com/t/wowza-server-crash-possible/40151/4 "2015-02-18T11:51:35Z")
Hi, I recommend creating a ticket with Wowza support my sending an email to support@wowza.com to resolve the crashing issue you’re having. As for the “Missing function: xsbwtest” messages, the “Missing function: [function-name]” error in Wowza is usually the result of a Flash application doing NetConnection.call([function-name]) where [function-name] does not exist. Wowza will ignore the messages that it does not understand but does log them. I recommend checking the log for memory related issues if Wowza is crashing. Ensure that the server is tuned using the [Wowza tuning guide](https://www.wowza.com/docs/how-to-do-performance-tuning). After making any adjustments to the tuning you will need to restart Wowza for the changes to take effect. Regards, Jason ---
**Author:** ![Jaxx\_Colgate](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@Jaxx\_Colgate](https://community.wowza.com/u/Jaxx_Colgate)\ **Post date:** [February 18, 2015, 12:26pm UTC](https://community.wowza.com/t/wowza-server-crash-possible/40151/5 "2015-02-18T12:26:25Z")
Have same problem, OS not crashed, Wowza server only. First - bunch of > 2015-02-17 23:17:06 CST comment server WARN 200 - Missing function: xsbwtest And next bunch of > 2015-02-17 23:45:56 CST comment server INFO 200 - killUnidentifiedSessions: Killing unidentified session: address:/xxx.xxx.xxx.xxx:33266 - - - 423841.581 Work only after restart WMS. How to fix?