It could be argued that it’s unfair to talk about problems with Windows 10 preview builds, since they are provided to us for testing purposes and expected to have issues. I hold the opposite view: everyone is better off if we report problems as publicly as possible. But I’ll try to stick to the facts and avoid complaining.

With the arrival of Windows 10 Insider Preview Build 11082, my test PC started doing some very weird things. The extent to which these problems are specific to my hardware remains unclear.

• On logging in for the first time after the new build was installed, Windows reported that the application CCleaner was not compatible with the new Windows build, and had been removed. CCleaner (formerly CrapCleaner) is primarily a tool for removing junk and temporary files from Windows systems. The message pointed to this page, which says “If you try to use this app with Windows Insider Preview , it might not work correctly or might not work at all.” Not too helpful. I reported the problem to the CCleaner developers.
• Normally, when File Explorer copies, moves, or deletes files, it displays a progress dialog. Those dialogs no longer appear. File operations still work, but there’s no visual indication of what’s going on.
• Audio stopped working completely. A reboot didn’t help. Powering off the computer completely and then back on did fix the problem. There was nothing in the Windows events logs to point to a possible cause.

None of these issues are show-stoppers for me. I used the Windows 10 Feedback app to report the File Explorer dialog problem.

This is the first Windows 10 preview build with which I’ve had any serious problems, aside from privacy concerns. It will be interesting to see how quickly Microsoft responds.

Update 2015Dec21: The CCleaner developer responded to my report, saying that they have received similar reports and that they are looking into it.