My appinsight has done this twice.
i'll receive an error stating that its status is unknown because the server certificate has expired, after troubleshooting i am unable to clear the error, but when i come back in the next day Appinsight is polling again and the error is no longer there.
both exchange servers have self signed certs from solarwinds that were issued during the auto configure that solarwinds does when first adding appinsight to them.
i have reconfigured them using the auto configure, but the error still shows up, then in the middle of the night they clear.
any thoughts on what this could be.