Having 7.16.3 properly licensed with Platinum, I cannot run some (tried five) ML-rules from Security due to: ".siem-signals-default" missing.
I have Elastic Agent deployed with Security Endpoint activated and lots of data in logs-* An error occurred during rule execution: message: "windows_rare_metadata_user,v2_windows_rare_metadata_user missing" name: "Unusual Windows User Calling the Metadata Service" id: "0f1f529c-79e7-11ec-8cb2-a14d75db9d36" rule id: "df197323-72a8-46a9-a08e-3f5b04a4a97a" signals index: ".siem-signals-default"
Sorry about the confusion here -- looks like that error message isn't helpful enough. Your signals index isn't actually missing, but rather one of the ML Jobs on that Rule isn't installed. In this case it looks like missing is added next to the job in question: v2_windows_rare_metadata_user missing.
To resolve, you can use the ML Job Settings UI to install the v2_windows_rare_metadata_user Job, or if you don't care about that Job and are just using windows_rare_metadata_user, you can clone the Rule and just remove the other Job by editing the Rule.
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