Hello Cheng,
It can be SAML IdP metadata might have limited validity that expires.
It can be certification rotate at Azure and SP is not fetching properly.
Can be connectivity problems when fetching metadata.
Check SAML service provider logs during failures to identify root cause.
We can automat metadata refresh.
Hi Cheng,
This seems to be a metadata synchronization problem. Try to update your SMAL module to the latest release.
Thanks