How to run an OpenVPN server on Windows?

Question

openvpn

Hello! Error when starting OpenVPN server: CreateFile failed on TAP device: \\.\Global\{FC4DE092-A3BC-450F-80A9-7160AF91F87C}.tap: Too many links (errno=31).

full log

Wed Jul 10 12:49:40 2019 OpenVPN 2.4.7 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Apr 25 2019
Wed Jul 10 12:49:40 2019 Windows version 6.2 (Windows 8 or greater) 64bit
Wed Jul 10 12:49:40 2019 library versions: OpenSSL 1.1.0j 20 Nov 2018, LZO 2.10
Enter Management Password:
Wed Jul 10 12:49:40 2019 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25340
Wed Jul 10 12:49:40 2019 Need hold release from management interface, waiting...
Wed Jul 10 12:49:41 2019 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25340
Wed Jul 10 12:49:41 2019 MANAGEMENT: CMD 'state on'
Wed Jul 10 12:49:41 2019 MANAGEMENT: CMD 'log all on'
Wed Jul 10 12:49:41 2019 MANAGEMENT: CMD 'echo all on'
Wed Jul 10 12:49:41 2019 MANAGEMENT: CMD 'bytecount 5'
Wed Jul 10 12:49:41 2019 MANAGEMENT: CMD 'hold off'
Wed Jul 10 12:49:41 2019 MANAGEMENT: CMD 'hold release'
Wed Jul 10 12:49:41 2019 NOTE: when bridging your LAN adapter with the TAP adapter, note that the new bridge adapter will often take on its own IP address that is different from what the LAN adapter was previously set to
Wed Jul 10 12:49:41 2019 Diffie-Hellman initialized with 2048 bit key
Wed Jul 10 12:49:41 2019 interactive service msg_channel=0
Wed Jul 10 12:49:41 2019 open_tun
Wed Jul 10 12:49:41 2019 MANAGEMENT: Client disconnected
Wed Jul 10 12:49:41 2019 CreateFile failed on TAP device: \\.\Global\{FC4DE092-A3BC-450F-80A9-7160AF91F87C}.tap: Too many links (errno=31)
Wed Jul 10 12:49:41 2019 Exiting due to fatal error

How to fix the error and start the OpenVPN server?!!! Thanks in advance for a complete answer!
Ps: This question is asked on the Internet on the forums, but there is no answer to it

Answer 1

Try setting the OpenVPN Service to Manual startup mode.
Also check that the TAP adapter exists and is enabled.