OpenVPN Error: All TAP-Windows adapters on this system are currently in use

Error "All TAP-Windows adapters on this system are currently in use" disebabkan karna ada problem di virtual Tun/ Tap network adapter yang digunakan untuk openVPN di windows. Cara mengatasi masalah ini, kita butuh re-enable (mengaktifkan kembali adapter ini di control panel) atau re-install adapter/ driver.

Solusi pertama - Re-enable driver :

Open Control Panel > Network and Internet > Network and Sharing Center > Change adapter settings. 

Check description of network adapters untuk menemukan the Tap-Windows Adapter.  

Klik kanan  > Disable. 

Klik kanan lagi > Enable.

Solution 2: Re-install  Tap driver  

Check sudah terinstall pada direktori ini silahkan di open "C:\Program Files\TAP-Windows" 

Klik kanann Uninstall and pilih Run as administrator 

Reboot komputer nya.. (tak di perlukan, tapi ini recommended)

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Download the Tap driver from OpenVPN repository and install it 

(right click on it > Run as administrator)

Example log error :

Thu Mar 11 09:31:32 2021 [openvpn-ptpn] Peer Connection Initiated with [AF_INET]x.x.x.x:443

Thu Mar 11 09:31:34 2021 open_tun

Thu Mar 11 09:31:34 2021 All TAP-Windows adapters on this system are currently in use.

Thu Mar 11 09:31:34 2021 Exiting due to fatal error

source : https://vpn.ac/knowledgebase/64/OpenVPN-Error-All-TAP-Windows-adapters-on-this-system-are-currently-in-use.html