Can someone help with the following.

I am running Windows 10 64bit and had Boinc mgr with number of projects running.

Due to Boinc mgr wrongly reading the Bios setting for virtual machine support I was doing a reinstall of Boinc. This resulted in an installation where the boinc mgr was not able anymore to connect to the localhost.

Further I have found multiple of the Boinc_master directories that I am not able to delete to clean up the system for a really clean installation.

Any ways to do a cleanup on windows 10?

any other hints to solve this installation problem?

Due to Boinc mgr wrongly reading the Bios setting for virtual machine support I was doing a reinstall of Boinc.

Uhm, as far as I know, BOINC does no BIOS readings whatsoever. So what is this that you were trying to do or saw BOINC do, or not do?

This resulted in an installation where the boinc mgr was not able anymore to connect to the localhost.

And you used the correct BOINC versions, 32bit vs 32bit, 64bit vs 64bit, not combined them?

Further I have found multiple of the Boinc_master directories that I am not able to delete to clean up the system for a really clean installation.

You only get a BOINC_master directory when you install BOINC as a service.
You only get to install the BOINC service if you're at least an administrator, but to remove things, you need to a) uninstall BOINC, b) remove the directories as an administrator. Perhaps even as the Windows administrator (the one behind the UAC).

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