DNS is not working with F-Secure version 25.6

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Hemmaph
Hemmaph Posts: 3 New Member
in Privacy VPN

A few days ago (2025-07-08) a new version of F-Secure where installed.
The versionnumber is 25.6

There is something wrong with the version.
Normerly i do not have VPN-protection on.
When I turn ON VPN-protection i lost the connection to DNS-services.
So I can not do anything because the computer can not resolve the question and the is frezzing.

I have done commandpromt 'ipconfig /all | more'.

Here is the respons:
Unknown adapter FSVpnSDK-WireGuardTunnel:Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WireGuard Tunnel
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.234.0.3(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 8.8.8.8
8.8.4.4
NetBIOS over Tcpip. . . . . . . . : Enabled

I do not have a 'Default Gateway' in the VPN network.

Question:
-Is there someone how knows the the problem is?
-Is it a bug in version 25.6?

The VPN-function has worked fine in version 25.5.

Your sincererly Peter Hansson (Sweden)

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Accepted Answer

Answers

  • JOnes
    JOnes Posts: 1,048 Forum Guru
    edited July 12

    As far as i know f-secure 25.6 has some glitches on all supported platforms(Win,Mac,android,iOS) but the dns problem you descripe is unknown to me at win11(24H2),f-secure 25.6,and on wire_quard vpn protocol.Have you tried the same procedure that was offered as sollution in Freedome VPN ?

    On your Windows 10/11 ? , open command prompt as an administrator and type the following commands one by one:

    1. ipconfig /flushdns

    2. netsh winsock reset

    3. netsh int ipv6 reset

    After that, restart your machine.

    After that you can test the dns server(s) by typing(vpn on) at the admin level

    nslookup (* it gives you the default dns server in use)

    and command tracert 8.8.8.8 would be also useful to see if routing is ok (vpn on)

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  • Hemmaph
    Hemmaph Posts: 3 New Member

    Thanks for your reply.

    Here is my answer:
    I have tried the newly Hydra and WireGuard VPN protocol.
    After the upgrade to 25.6 the standard protocol is Hydra

    I will also try to apply the ipconfig settings.

    Your sincererly Peter Hansson

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  • Hemmaph
    Hemmaph Posts: 3 New Member

    Thanks for your reply.

    After resetting the ipconfig stack, netsh stack and rebooting the computer the status is 'ok'.

    Here is the result:
    tracert 8.8.8.8

    Tracing route to dns.google [8.8.8.8]
    over a maximum of 30 hops:

    1 10 ms 10 ms 10 ms 10.234.0.0
    2 10 ms 10 ms 10 ms 172.18.0.1
    3 10 ms 10 ms 10 ms unn-84-17-36-124.cdn77.com [84.17.36.124]
    4 10 ms 10 ms 10 ms vl202.sto-itx-core-2.cdn77.com [79.127.192.34]
    5 10 ms 10 ms 10 ms 142.250.171.182
    6 10 ms 10 ms 12 ms 172.253.50.169
    7 10 ms 10 ms 10 ms 142.250.239.185
    8 10 ms 10 ms 10 ms dns.google [8.8.8.8]

    Trace complete.

    nslookup
    Default Server: dns.google
    Address: 8.8.8.8

    Your sincererly Peter Hansson (Sweden)

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