Can VPN shut down Internet connection?
Hello,
I am experiencing recurring issues with Bitdefender VPN.
Once installed on a PC, the internet connection randomly drops. It sometimes restores if I reactivate the VPN connection.
The kill switch is NOT enabled. The operating system is Windows 10 with a clean, up-to-date installation as of 15/12/2024. The VPN was previously installed.
The issue is specific to internet access, as the local network functions correctly (access to NAS, printers, other PCs). The problem seems related to DNS release (as also noted by Windows troubleshooting). When the DNS is "blocked," the PC cannot connect to the internet. Restarting the PC or reconfiguring the network settings intermittently resolves the issue, causing disruptions and delays.
There are no specific firewall rules blocking the PCs; they are all under the same policy.
We have numerous PCs on the same network, all with Bitdefender VPN installed.
The problem occurs randomly and sporadically on only some PCs. After the latest Bitdefender VPN update, the issue seemed mitigated but has reoccurred only on two workstations (Windows 11 and Windows 10). The problem is now less frequent and affects fewer PCs.
On the affected PC with a clean Windows 10 installation, the issue occurred during normal use for two consecutive days. Yesterday, the problem was resolved by re-entering the preferred DNS on the physical network adapter (this is like reboot the network card, when apply).
Today, with the VPN disconnected and the network icon showing no internet (world icon), clicking "Connect" from the Bitdefender VPN app restored the internet connection.
As I write this message, everything has been functioning correctly for the past 2 hours.
I suspect the VPN may conflict with DNS settings. Reconnecting the VPN or restarting the service/network adapter, intermittently restores internet access. Local network access is always functional.
Could this issue be related to the "Wireguard virtual adapter" or the "Bitdefender TAP Adapter," causing compatibility problems? The connection drops randomly and unpredictably.
I want to use the Bitdefender VPN, and am willing to perform any tests you recommend to identify the issue.
We use VPN, from: Bitdefender Premium Security and Bitdefender Premium VPN.
Thank you for support.
Comments
-
When I installed bitdfender VPN and antivirus on my Iphone, I could not access the internet. When I deleted Bitdefender, it worked again
Chris
0