We would occasionally (pre 8.8) see scheduled tasks immediately fail on every single device, right after hitting Start Now. Resetting the package hash would always immediately fix the problem. This would happen to packages that have been deployed before, and packages that were brand new, it made no distinction.
Now, we upgraded to 8.8 and installed SP1, and in the documentation for SP1 it said that it fixed an issue where scheduled tasks would spontaneously and immediately fail (I'm talking immediate -- even before discovering agents or caching files or anything.
But we still have this problem. What can we do?