Copter wont Arm

Copter won’t arm even though Pass through preflight check.I keep getting check Fence.

On mine Quad, If the fence is enabled, the copter will not arm without 10Sats.

If you have the fence enabled the EKF needs to have a good position estimate before you can arm - otherwise the fence wouldn’t work.

I think I had more than 10 sat but I am going to check.thanks

It’s not only sat number, it checks other GPS numbers to see if the GPS is accurate enough. But you should get detailed messages in your GCS to the reason it doesn’t arm.

Yes, I’m sure this is caused by a not-so-good position estimate while the circular or polygon fence is enabled. I’m going to close this issue if there are no objections.