Using Process Explorer I can see that each of these dialog boxes belong to a different Skype process. Inspecting all Skype processes shows that one is “normal” and all others show this:
To me this all looks like Avast is trying to install a new version of Skype and before doing so needs to shut down Skype and this is where something goes wrong.
In I:\Windows\Temp\avast_ash2\Skype\ is an asulaunch.log file and there I see these lines:
14/12/16 00:34:03 INFO: New logging session started…
14/12/16 00:34:04 INFO: LUA: process id: 16468
14/12/16 00:35:04 ERROR: Exception: ScriptGuidedInstall/_G.assert: error: waitForSingleObject failed due to false
thank you for the report. Unfortunately we were unable to reproduce this issue, so could you please provide some additional info to help us investigate it?
Have you installed Skype regularly (from skype.com), or from Microsoft Store?
Could you please try to shutdown Skype while it is running, using this command line:
I have this same message, too. Issue started to appear some weeks ago.
Windows 10 Home, Avast Free updated to latest version, account is non-administrative (PC has 2 accounts, one Admin which is mine and one normal user for my wife).