Mistakenly installed Win10 OpenVPN on Windows7

[martinochiro]

As shown on the Subject, i installed for mistake a Win10 installation file on Win7 PC.
After some efforts to get OpenVPN working on the PC with Win7, i need some help.
The log is shown here:

Sun Sep 08 01:23:07 2019 OpenVPN 2.4.7 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Apr 25 2019
Sun Sep 08 01:23:07 2019 Windows version 6.1 (Windows 7) 64bit
Sun Sep 08 01:23:07 2019 library versions: OpenSSL 1.1.0j 20 Nov 2018, LZO 2.10
Sun Sep 08 01:23:27 2019 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Sun Sep 08 01:23:27 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]75.22.44.1:1194
Sun Sep 08 01:23:27 2019 UDP link local: (not bound)
Sun Sep 08 01:23:27 2019 UDP link remote: [AF_INET]75.22.44.1:1194
Sun Sep 08 01:23:27 2019 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Sun Sep 08 01:23:27 2019 [192.168.55.45] Peer Connection Initiated with [AF_INET]75.22.44.1:1194
Sun Sep 08 01:23:28 2019 AUTH: Received control message: AUTH_FAILED
Sun Sep 08 01:23:28 2019 SIGUSR1[soft,auth-failure] received, process restarting

and the cfg file:


client
dev tap
proto udp
remote 93.51.16.75
resolv-retry infinite
nobind
persist-key
persist-tun
ca movicert.pem
auth-user-pass
comp-lzo

[TinCanTech]

There is an uninstall option ..

[martinochiro]

Uninstall OpenVPN
i used this command.
After that i reinstall the file:
openvpn-install-2.4.7-I607-Win7.exe
without problems.
So i restarted the Win7 PC, and try again to use the OpenVPN GUI,
that ask me Username and Password, but after give the correct user and pwd i get the
following error in the log:
Sun Sep 08 11:56:25 2019 OpenVPN 2.4.7 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Apr 25 2019
Sun Sep 08 11:56:25 2019 Windows version 6.1 (Windows 7) 64bit
Sun Sep 08 11:56:25 2019 library versions: OpenSSL 1.1.0j 20 Nov 2018, LZO 2.10
Sun Sep 08 11:56:51 2019 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Sun Sep 08 11:56:51 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]93.51.16.75:1194
Sun Sep 08 11:56:51 2019 UDP link local: (not bound)
Sun Sep 08 11:56:51 2019 UDP link remote: [AF_INET]93.51.16.75:1194
Sun Sep 08 11:56:51 2019 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Sun Sep 08 11:56:51 2019 [192.168.55.45] Peer Connection Initiated with [AF_INET]93.51.16.75:1194
Sun Sep 08 11:56:52 2019 AUTH: Received control message: AUTH_FAILED
Sun Sep 08 11:56:52 2019 SIGUSR1[soft,auth-failure] received, process restarting

The GUI prompted me to enter again username and pwd, i do it (correctly) but with the same result.
I repeated the above process, more times, but there is no way to get OpenVPN working on my Win7 Ultimate laptop.
The mistake was mine, (install the Win10 version) but theer is no way to roll back the situation ?
Thank you

[TinCanTech]

Please contact your server administrator to receive the correct login credentials.

[martinochiro]

Without any explanation for me,
after writing by hand username and password, on the login window, over the proposed ones,
i succesfully open the VPN connection.
This the resulting log:

Sun Sep 08 17:13:30 2019 OpenVPN 2.4.7 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Apr 25 2019
Sun Sep 08 17:13:30 2019 Windows version 6.1 (Windows 7) 64bit
Sun Sep 08 17:13:30 2019 library versions: OpenSSL 1.1.0j 20 Nov 2018, LZO 2.10
Sun Sep 08 17:14:01 2019 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Sun Sep 08 17:14:01 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]93.51.16.75:1194
Sun Sep 08 17:14:01 2019 UDP link local: (not bound)
Sun Sep 08 17:14:01 2019 UDP link remote: [AF_INET]93.51.16.75:1194
Sun Sep 08 17:14:01 2019 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Sun Sep 08 17:14:01 2019 [192.168.55.45] Peer Connection Initiated with [AF_INET]93.51.16.75:1194
Sun Sep 08 17:14:02 2019 open_tun
Sun Sep 08 17:14:02 2019 TAP-WIN32 device [Connessione alla rete locale (LAN) 4] opened: \\.\Global\{09178DBC-8E41-4299-B7C7-9C84E0024DB8}.tap
Sun Sep 08 17:14:02 2019 Notified TAP-Windows driver to set a DHCP IP/netmask of 192.168.0.155/255.255.255.0 on interface {09178DBC-8E41-4299-B7C7-9C84E0024DB8} [DHCP-serv: 192.168.0.0, lease-time: 31536000]
Sun Sep 08 17:14:02 2019 Successful ARP Flush on interface [33] {09178DBC-8E41-4299-B7C7-9C84E0024DB8}
Sun Sep 08 17:14:07 2019 Initialization Sequence Completed

I thank you.