Loss Of LAN/Internet Access With Bitdefender Total Security On Windows 11
Hi,
For a week +/- (may be after the last Windows 11 update), I can't use Bitdefender total security on 2 of my computer: I can't access LAN (NAS, Router...) or internet (any website). Not a DNS problem, same with IP (NAS or router). Firefox, Chrome, Discord, Steam ...can't access anything, except if I try to ping: I can reach everything (LAN/Internet). I also can ping a domain name, it's been resolved.
Sometimes, the problem appears a few minutes after the boot, sometimes on startup.
I tried to deactivate all Bitdefender modules (Antivirus, Firewall, Threat management...): still the same. The only way to recover access is to uninstall Bitdefender, so all work instantly.
Both of theses 2 computers use Windows 11 up-t-date on regular chan 22H2, build 22621.675). No other firewall/antivirus installed. 2 other computers, one on Windows 11 (up-to-date) and one on Windows 10, don't have this problem at this time.
At this point, I don't know what I can do...... Any idea? :/
Comments
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Hello.
-- STEP 1 --
Repair Bitdefender, by following these steps:
-- STEP 2 --
If the instructions from Step 1 didn't help, uninstall the Bitdefender program using the Uninstall Tool:
It will completely remove the program.
Next, reinstall Bitdefender from your Bitdefender Central account and see if the issue has been solved, as reinstalling the program usually solves the issues.
-- STEP 3 --
If the instructions from Step 2 didn't help, follow the instructions in this step.
First, take screenshot(s) of the issue,
create a log file on your Windows device using Bitdefender Support Tool, by following these steps:
and
create a connectivity log file, by following these steps:
Next, contact Bitdefender Consumer Support by e-mail:
with short description of the issue.
After that, you will get an automated reply by the Bitdefender Customer Care Team, with your ticket number.
Now, in reply to that automated reply, you can send the screenshot(s) you already took and the log files you already created.
Since you are all done, just wait for the support engineers to investigate your issue and find a solution to fix the issue.
Remember that the screenshot(s) and the log files will help a lot to the support engineers for better and faster investigation on your issue and finding a solution.
Regards.
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When I first used my new Laptop (25/12/2024) I installed BitDefender with no problem. However, since the 10/01/2025 I am having problems whenever I shutdown and power on. There is no Internet access. However, disabling BitDefender permanently still has no Internet until I restart the PC. Internet access is allowed even when I renable BitDefender. But after shutdown it reverts to no Internet access.
The problem seems to be shutdown reinvokes BitDefender which stops internet access., unless it is diasbled. N.B. power on, disable BitDefender permanently and do a Power/Restore allows internet access. Enabling BitDefender still allows Internet access.
I tried step 1 and it worked and I had intrernet access. However, after shutdown and power up BitDefender was enabled but no Internet access.
Tried step 2 and it worked even after shutdown/power on. However BitDefender is showing the Windows version on the laptop as
Vendor:
Micro-Star INTL CO., LTD.
MAC Address:
D8:43:AE:CE:7B:3E
Operating System:
Microsoft Windows 10.0.22631
when the Microsoft specification is:
Edition: Windows 11 Home
Version: 23H2
Installed on: 25/12/2024
OS Build: 22631.4602
Experience: Windows Features Experience Pack 1000.22700.1005.0
I am using my Desktop PC to type this up hence not the screen shot from the laptop.
I will continue with a working laptop and post if it stops working.
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When I first used my new Laptop (25/12/2024) I installed BitDefender with no problem. However, since the 10/01/2025 I am having problems whenever I shutdown and power on. There is no Internet access. However, disabling BitDefender permanently still has no Internet until I restart the PC. Internet access is allowed even when I renable BitDefender. But after shutdown it reverts to no Internet access.
The problem seems to be shutdown reinvokes BitDefender which stops internet access., unless it is diasbled. N.B. power on, disable BitDefender permanently and do a Power/Restore allows internet access. Enabling BitDefender still allows Internet access.
I tried step 1 and it worked and I had internet access. However, after shutdown and power up BitDefender was enabled but no Internet access.
Tried step 2 and it worked even after shutdown/power on. However BitDefender is showing the Windows version on the laptop as
Vendor:Micro-Star INTL CO., LTD.MAC Address:D8:43:AE:CE:7B:3EOperating System:Microsoft Windows 10.0.22631when the Microsoft specification is:
Edition: Windows 11 Home
Version: 23H2
Installed on: 25/12/2024
OS Build: 22631.4602
Experience: Windows Features Experience Pack 1000.22700.1005.0
I am using my Desktop PC to type this up hence not the screen shot from the laptop.
I will continue with a working laptop and post if it stops working.
When I first used my new Laptop (25/12/2024) I installed BitDefender with no problem. However, since the 10/01/2025 I am having problems whenever I shutdown and power on. There is no Internet access. However, disabling BitDefender permanently still has no Internet until I restart the PC. Internet access is allowed even when I renable BitDefender. But after shutdown it reverts to no Internet access.
The problem seems to be shutdown reinvokes BitDefender which stops internet access., unless it is diasbled. N.B. power on, disable BitDefender permanently and do a Power/Restore allows internet access. Enabling BitDefender still allows Internet access.
I tried step 1 and it worked and I had intrernet access. However, after shutdown and power up BitDefender was enabled but no Internet access.
Tried step 2 and it worked even after shutdown/power on. However BitDefender is showing the Windows version on the laptop as
Vendor:Micro-Star INTL CO., LTD.MAC Address:D8:43:AE:CE:7B:3EOperating System:Microsoft Windows 10.0.22631when the Microsoft specification is:
Edition: Windows 11 Home
Version: 23H2
Installed on: 25/12/2024
OS Build: 22631.4602
Experience: Windows Features Experience Pack 1000.22700.1005.0
I am using my Desktop PC to type this up hence not the screen shot from the laptop
I will continue with a working laptop and post if it stops working.
Hi AGAIN. After a few minutes it stops working. Possible 5 minutes is the time set for BitDefender to perform some checks and then stopping Internet access.
Trying Step 3: But it might be a problem because after BitDefender stops the access I will need to restart the laptop. I'll see how it goes.
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