Other causes for "Unable to find any valid repository" events from clients?
I've been tracking this for a few weeks now, but it seems to be a bit difficult to pin down...
Once every week or so, we notice a huge spike in the frequency that this client event is generated.
There is no correlation between locations, domains, or time zones but is distributed uniformly throughout all clients. (Agents 4.5p1)
I did eventually notice that the vast majority (like 99.9%) of these events have the value "N/A" in the user field.
It does not coincide with checking-in packages, nor replication tasks.
All agents use IIS repositories anonymously for their updates, none are configured to go directly to ePO.
All agents check for updates several times per day, and when this spike occurs it lasts for 2-3 hours.
Systems successfully check for updates 20-30 times per week, and receive them when there is something new, so this isn't crucial--just irritating.
Initially, I thought this might be related to the differences between regular user accounts and the system account, but I'm not entirely convinced as I have been unable to recreate the problem--short of yanking the cable from the NIC.
I'm leaning to something server-side, simply because we couldn't get that many systems to do something at the same time even if we wanted.