# 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/35503>\
**Category:** Ansible Developer\
**Created:** [July 13, 2021, 5:33pm 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/35503 "2021-07-13T17:33:04Z")\
**Posts on this page:** 1\
**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, 5:33pm 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/35503/1 "2021-07-13T17:33:04Z")

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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.