Hi Sanadmin_do,
Have you tried setting these advanced settings in the policy listed below to disable extension checks:
[-is-file-extension-check-on-directories-enabled {true|false}] - Is File Extension Check on Directories Enabled (privilege: advanced)If you specify this parameter, the command displays scope information only about the FPolicy policy or policies that use the specified file extension check on directories. If set to true, the command displays information about scopes where file extension checks on directories is enabled. If set to false, the command displays information about scopes where file extension checks on directories is disabled.
[-is-monitoring-of-objects-with-no-extension-enabled {true|false}] - Is Monitoring of Objects with No Extension Enabled (privilege: advanced)If you specify this parameter, the command displays scope information only about the FPolicy policy or policies that use the specified monitoring of objects with no extension setting. If set to true, the command displays information about scope of policy or policies for which monitoring of objects with no extension is enabled.
For your reference:
https://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-cmpr-900/vserver__fpolicy__policy__scope__modify.html
Regards,
Team NetApp
Team NetApp