Most of my clients are supposed to be looking to Apple for software updates. A small subset are pointed to an internal Apple SUS.
I have a simple Software Update policy scoped to all clients in Self Service. It's set to "use computer's default software update server" so non-managed clients using the policy should reach out to Apple and managed clients should go to the internal SUS.
However, a seemingly random group of about 50 clients, some that are unmanaged and some that are supposed to be pointed to the SUS, are having their default update server changed to http://:/index.sucatalog when they run the policy. My own laptop is one of the affected, and I can completely clear off any software update settings and then run the policy and I get this in the policy log:
Setting Software Update Server to http://:/index.sucatalog for all accounts...
I can't figure out why. I have an issue open with support and haven't been able to resolve it yet, so I'm wondering if anyone here has any insight.