# I have a problem with load balancer 4.0

**URL:** <https://community.wowza.com/t/i-have-a-problem-with-load-balancer-4-0/50940>\
**Category:** Hire a Consultant\
**Created:** [March 15, 2018, 5:04pm UTC](https://community.wowza.com/t/i-have-a-problem-with-load-balancer-4-0/50940 "2018-03-15T17:04:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![natthaphon\_phoonsook](https://avatars.discourse-cdn.com/v4/letter/n/f6c823/32.png) [@natthaphon\_phoonsook](https://community.wowza.com/u/natthaphon_phoonsook)\
**Post date:** [March 15, 2018, 5:04pm UTC](https://community.wowza.com/t/i-have-a-problem-with-load-balancer-4-0/50940/1 "2018-03-15T17:04:23Z")

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```auto
==> logs/wowzastreamingengine_access.log <== │
2018-03-15 15:50:05 ICT comment server ERROR 500 - Encrypter:Decrypt() Error decrypting message: '<html><head><title>Wowza Streaming Engi│
ne 4 Trial Edition (Expires: Apr 14, 2018) 4.7.4 build21380</title></head><body>Wowza Streaming Engine 4 Trial Edition (Expires: Apr 14, 2018) 4.7.4 build21380</body>│
</html>, : java.lang.NullPointerException|at com.wowza.wms.plugin.loadbalancer.encoders.Thor.decrypt(Thor.java:74)|at com.wowza.wms.plugin.loadbalancer.encoders.Encry│
pter.decrypt(Encrypter.java:106)|at com.wowza.wms.plugin.loadbalancer.general.XMLParser.xmlParse(XMLParser.java:55)|at com.wowza.wms.plugin.loadbalancer.general.URLHa│
ndler.clientBandwidthURL(URLHandler.java:54)|at com.wowza.wms.plugin.loadbalancer.monitors.LoadBalanceBandwidthMonitorClient.run(LoadBalanceBandwidthMonitorClient.jav│
a:173)| - - - 55.356 - - - - - - - - - - - - - - - - -│
- - - - - - - - │
                                                                                                                                                                      │
==> logs/wowzastreamingengine_error.log <== │
ERROR server comment 2018-03-15 15:50:05 - - - - - 55.356 - - - - - - - - E│
ncrypter:Decrypt() Error decrypting message: '<html><head><title>Wowza Streaming Engine 4 Trial Edition (Expires: Apr 14, 2018) 4.7.4 build21380</title></head><body>W│
owza Streaming Engine 4 Trial Edition (Expires: Apr 14, 2018) 4.7.4 build21380</body></html>, : java.lang.NullPointerException|at com.wowza.wms.plugin.loadbalancer.en│
coders.Thor.decrypt(Thor.java:74)|at com.wowza.wms.plugin.loadbalancer.encoders.Encrypter.decrypt(Encrypter.java:106)|at com.wowza.wms.plugin.loadbalancer.general.XML│
Parser.xmlParse(XMLParser.java:55)|at com.wowza.wms.plugin.loadbalancer.general.URLHandler.clientBandwidthURL(URLHandler.java:54)|at com.wowza.wms.plugin.loadbalancer│
.monitors.LoadBalanceBandwidthMonitorClient.run(LoadBalanceBandwidthMonitorClient.java:173)|

```

---

<div class="post-metadata">

**Author:** ![Karel\_Boek](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/karel_boek/32/454_2.png) [@Karel\_Boek](https://community.wowza.com/u/Karel_Boek)\
**Post date:** [March 16, 2018, 8:07am UTC](https://community.wowza.com/t/i-have-a-problem-with-load-balancer-4-0/50940/2 "2018-03-16T08:07:14Z")

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Hi @natthaphon phoonsookserm

This forum is called “Hire a Consultant”, and meant for inquiries for paid support from authorized (external) consultants. If you’re looking for support from Wowza, you may post your question in [https://www.wowza.com/community/spaces/31/wowza-streaming-engine-support-forums.html](https://www.wowza.com/community/spaces/31/wowza-streaming-engine-support-forums.html), or join the Slack community ([https://www.wowza.com/slack](https://www.wowza.com/slack))

Said that, the problem is likely that you are using load balancer 4.0 and it is not configured correctly, please use 4.5 as it auto configures things.