# fatal: \[s1\]: FAILED! =\> {"msg": "Unable to automatically determine host network os. Please manually configure ansible\_network\_os value for this host"}

**URL:** <https://forum.ansible.com/t/fatal-s1-failed-msg-unable-to-automatically-determine-host-network-os-please-manually-configure-ansible-network-os-value-for-this-host/35501>\
**Category:** Ansible Project\
**Created:** [July 13, 2021, 5:27pm UTC](https://forum.ansible.com/t/fatal-s1-failed-msg-unable-to-automatically-determine-host-network-os-please-manually-configure-ansible-network-os-value-for-this-host/35501 "2021-07-13T17:27:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sanjivy\_raja](https://avatars.discourse-cdn.com/v4/letter/s/c5a1d2/32.png) [@sanjivy\_raja](https://forum.ansible.com/u/sanjivy_raja)\
**Post date:** [July 13, 2021, 5:27pm UTC](https://forum.ansible.com/t/fatal-s1-failed-msg-unable-to-automatically-determine-host-network-os-please-manually-configure-ansible-network-os-value-for-this-host/35501/1 "2021-07-13T17:27:40Z")

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Hello Everyone!

I have been trying to run the below play book , I keep getting different kinds of errors whenever I try to change the syntax, I am guessing the errors are due to deprecated syntax. Can some one tell me the mistake I am making.

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**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\
**Post date:** [July 13, 2021, 5:39pm UTC](https://forum.ansible.com/t/fatal-s1-failed-msg-unable-to-automatically-determine-host-network-os-please-manually-configure-ansible-network-os-value-for-this-host/35501/2 "2021-07-13T17:39:55Z")

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Let's not have us guess as well.  
Instead tell exactly what "different kinds of errors" you get, from  
which commands, and with which syntax.  
Then we might be able to help....