Ran into a problem where ACT was deployed to many computers, their data was successfully being created on the file share, but the computers were not showing up in the App Compatibility Manager. What I discovered (as it’s been awhile since I last used ACT) was that there is a log processing service which imports the logs from the share into the database.
In troubleshooting the issue, I came across and excellent guide by Microsoft for troubleshooting the log processing service. I went through every step and in nearing the end of the guide, the computers were still not imported. Ironically, the very last step was my fix and it was the easiest step – check that the Windows service “Act Log Processing Service” is running. Really? That couldn’t have been listed as one of the first thing to check?