Find in both the Playback and Recording tabs. Right-click > Properties > Advanced .
A dialog box will appear. Click the "Install Driver" button. Vbcable-a-driver-pack43.zip
The file refers to the installer for VB-Audio Virtual Cable A . Unlike the standard "VB-Cable," which provides a single virtual input and output, the "A" and "B" packs (and subsequent C and D packs) are donationware drivers that provide additional independent virtual cables. Find in both the Playback and Recording tabs
This usually happens if the driver wasn't installed with admin rights or if a reboot was skipped. Try uninstalling, rebooting, and reinstalling as an admin. Click the "Install Driver" button
When you install this pack, your system gains a new pair of audio devices: Seen as a playback device in Windows. Virtual Output A: Seen as a recording device in Windows.
Any audio sent to the Virtual Input A is internally routed—bit-perfect—to the Virtual Output A. Why Do You Need Additional Virtual Cables?
Understanding the VB-Cable Driver Pack: A Deep Dive into Vbcable-a-driver-pack43.zip