Android adb returns the “device not found” error

Question

When I plug my HTC Desire S phone into the PC (Win7) via USB, Device Manager shows a network adapter called \"HTC Remote NDIS based Device\".

Attempting a port mapp

Answer 1

Several responses mention "Select the "Unknown sources" checkbox; you find it in "Settings->Applications->Unknown sources."

Perhaps that was an option in a previous version of Android, but for me (using Android 4.4) there is no "Applications" sub-menu under "Settings". This appears to have moved to: "Settings" -> Security -> "Unknown sources"