# HTTP Parser error is launched constantly

**URL:** <https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551>\
**Category:** Ignition\
**Tags:** ignition79\
**Created:** [August 10, 2020, 2:42pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551 "2020-08-10T14:42:24Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Carlos\_Castillo](https://avatars.discourse-cdn.com/v4/letter/c/4491bb/32.png) [@Carlos\_Castillo](https://forum.inductiveautomation.com/u/Carlos_Castillo)\
**Post date:** [August 10, 2020, 2:42pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/1 "2020-08-10T14:42:24Z")

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Hi all,

Im getting this error in Ignition V7.9.11:

Illegal character 0x16 in state=START for buffer HeapByteBuffer@4ec19b22[p=1,l=517,c=8192,r=516]={\x16\<\<\<\x03\x01\x02\x00\x01\x00\x01\xFc\x03\x03N(\xB5y?T\xB0…\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\>\>\>isNull=“true”/\>\</…pa8XgCRAdNNHekL}

This error has been repeating every Saturday at the same time during 15 min. Between this time, in production lines the plc status show timeout errors. I have been searching in the internet but I havent found enough information.

Someone knows what or why this errors is launched?

Thanks!

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [August 10, 2020, 2:47pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/2 "2020-08-10T14:47:37Z")

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I would check with your IT department because it sounds like some kind of network/security scan is happening at that time.

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<div class="post-metadata">

**Author:** ![Carlos\_Castillo](https://avatars.discourse-cdn.com/v4/letter/c/4491bb/32.png) [@Carlos\_Castillo](https://forum.inductiveautomation.com/u/Carlos_Castillo)\
**Post date:** [August 10, 2020, 3:45pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/3 "2020-08-10T15:45:50Z")

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Hi Kevin,

Thanks for your quick response. I was checking into server event viewer and I found a lot of error related with schannel source, that makes me think that it is indeed a security issue.

Thanks!

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**Author:** ![monty29](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@monty29](https://forum.inductiveautomation.com/u/monty29)\
**Post date:** [December 6, 2023, 6:48pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/4 "2023-12-06T18:48:36Z")

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Hi Carlos,

Were you ever able to solve this issue ? I am experiencing a very similar issue. Ignition v7.8.3 running Windows 2012 O/S serve. Ignition is crashing every Saturday. Similar messages in the wrapper logs, Lot of troubleshooting but no root cause. Thanks, Dan

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<div class="post-metadata">

**Author:** ![Carlos\_Castillo](https://avatars.discourse-cdn.com/v4/letter/c/4491bb/32.png) [@Carlos\_Castillo](https://forum.inductiveautomation.com/u/Carlos_Castillo)\
**Post date:** [December 7, 2023, 1:22pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/5 "2023-12-07T13:22:01Z")

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Hi Dan,

The problem was due to some security updates on the servers. Uninstalling them solved the issue.

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<div class="post-metadata">

**Author:** ![monty29](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@monty29](https://forum.inductiveautomation.com/u/monty29)\
**Post date:** [December 7, 2023, 1:42pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/6 "2023-12-07T13:42:00Z")

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I believe we found that our v7.8 server was being scanned by an IT Cyber Security application. It must be something in the older version 7 Ignition that conflicts with the scan as it didn't affect the newer v8.x servers.

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [December 7, 2023, 1:51pm UTC](https://forum.inductiveautomation.com/t/http-parser-error-is-launched-constantly/37551/7 "2023-12-07T13:51:08Z")

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