Tap Adapter Issue

If you are a Windows 11 user, and you can’t connect using Acreto Connect Client you may experience a connection problem similar to one video below.

If you check the logs, you may find the logs with this information:

All tap-windows6 adapters on this system are currently in use or disabled

Cause of a problem

In one of the last updates, Microsoft changed the way of driver verificationÔÇöall drivers signed in the old way may stop working or start misbehaving.

One of the affected drivers is a TUN/TAP interface driver used by Acreto Connect Client.


Please follow the steps below to solve the issue:

  1. Click Start (or hit the Windows key) to open the Start Menu.
  2. In the search dialog box, type ncpa.cpl and press enter.
  3. You will see the list of all interfaces available in your system.
  4. Seach for any interface with Acreto Connect Client X name (where ‘X’ is a number).
  5. Click the right mouse button on this interface and choose Enable from the list of options.
  6. Go to Acreto Connect Client and try to establish a connection once again.

Next step

This issue may repeat continuously if using the Acreto Connect Client below version 2.9.7. Please repeat the procedure I’ve described any time an issue happens.