# Process csc.exe restarted ?

**URL:** <https://community.dynatrace.com/t/process-csc-exe-restarted/21335>\
**Category:** Alerting\
**Tags:** iis, process-groups, problems-classic\
**Created:** [January 29, 2021, 2:58pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335 "2021-01-29T14:58:35Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![AntonioSousa](https://dub1.discourse-cdn.com/dynatrace/user_avatar/community.dynatrace.com/antoniosousa/32/50_2.png) [@AntonioSousa](https://community.dynatrace.com/u/AntonioSousa)\
**Post date:** [January 29, 2021, 2:58pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335/1 "2021-01-29T14:58:35Z")

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I’m seeing in a particular case a lot of events on Windows IIS machines with the message:

Process csc.exe restarted

CSC is the C# compiler, so something is going on. Not sure, but probably associated with app pool recycles/restarts. Has anyone had any close encounter with this CSC, or have any idea what it might be doing in production environments, or still, how to analyze it further with Dynatrace?

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**Author:** ![ChadTurner](https://dub1.discourse-cdn.com/dynatrace/user_avatar/community.dynatrace.com/chadturner/32/161_2.png) [@ChadTurner](https://community.dynatrace.com/u/ChadTurner)\
**Post date:** [January 29, 2021, 9:31pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335/2 "2021-01-29T21:31:30Z")

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[@Antonio S.](https://answers.dynatrace.com/users/9493/view.html) this is new to me, I’ll keep an eye out if i see anyone else had a similar issue,

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**Author:** ![bgachie](https://avatars.discourse-cdn.com/v4/letter/b/c2a13f/32.png) [@bgachie](https://community.dynatrace.com/u/bgachie)\
**Post date:** [November 22, 2021, 1:46pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335/3 "2021-11-22T13:46:23Z")

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CSC is restarted each time it needs to compile a .NET DLL.&nbsp;  
So it should happen often when the server has just been started, and sometimes when a new (not yet called) endpoint is triggered.

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**Author:** ![Radoslaw\_Szulgo](https://dub1.discourse-cdn.com/dynatrace/user_avatar/community.dynatrace.com/radoslaw_szulgo/32/1977_2.png) [@Radoslaw\_Szulgo](https://community.dynatrace.com/u/Radoslaw_Szulgo)\
**Post date:** [November 22, 2021, 4:09pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335/4 "2021-11-22T16:09:10Z")

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Hm… maybe this process should be actually ignored by Dynatrace. Have you talked about this in help chat?

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**Author:** ![AntonioSousa](https://dub1.discourse-cdn.com/dynatrace/user_avatar/community.dynatrace.com/antoniosousa/32/50_2.png) [@AntonioSousa](https://community.dynatrace.com/u/AntonioSousa)\
**Post date:** [November 22, 2021, 7:19pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335/5 "2021-11-22T19:19:36Z")

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It’s quite helpful, as it is associated with slow response times that I see in certain environments. Just have to figure out why they are running 😉

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**Author:** ![AntonioSousa](https://dub1.discourse-cdn.com/dynatrace/user_avatar/community.dynatrace.com/antoniosousa/32/50_2.png) [@AntonioSousa](https://community.dynatrace.com/u/AntonioSousa)\
**Post date:** [November 22, 2021, 7:21pm UTC](https://community.dynatrace.com/t/process-csc-exe-restarted/21335/6 "2021-11-22T19:21:17Z")

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Yes, I understand those cases, although I do not see them those often in the circumstances that you mention . This has been a mystery to me for some time…