Wireless lan keeps disconnecting and sometimes fails to reconnect

[Guest]

Please help. My wireless home network connection on one computer (A) keeps
on disconnecting! It's not that bad while the other computer (B) is connected
- then the computer A is readily reconnected. But, if the computer B was
recently voluntarily disconnected or shut down, then it needs the adsl modem
to be rebooted for the computer A to be reconnected. The disconnection
depends on the usage of the network: usually after 10 mins or so idling, the
computer A is disconnected, otherwise not. I think this is not a settings
problem - as far as I know, they are all set to never disconnect. Nor think I
it would be a malware problem - the computer has been completely scanned.

I have noted from Security in Event Viewer that the disconnection or failure
to reconnect may have something to do with this error message:

Event Type: Failure Audit
Event Source: Security
Event Category: Policy Change
Event ID: 615
...
User: NT AUTHORITY\NETWORK SERVICE
...
Description:
IPSec Services: IPSec Services failed to get the complete list of network
interfaces on the machine. This can be a potential security hazard to the
machine since some of the network interfaces may not get the protection as
desired by the applied IPSec filters. Please run IPSec monitor snap-in to
further diagnose the problem.

This is very frustrating as I cannot find anything to suggest why this keeps
happening. Does anyone know why, and how can it be resolved?

Thanks

 

[Elmo]

Please help. My wireless home network connection on one computer (A) keeps
on disconnecting! It's not that bad while the other computer (B) is connected
- then the computer A is readily reconnected. But, if the computer B was
recently voluntarily disconnected or shut down, then it needs the adsl modem
to be rebooted for the computer A to be reconnected. The disconnection
depends on the usage of the network: usually after 10 mins or so idling, the
computer A is disconnected, otherwise not. I think this is not a settings
problem - as far as I know, they are all set to never disconnect. Nor think I
it would be a malware problem - the computer has been completely scanned.

I have noted from Security in Event Viewer that the disconnection or failure
to reconnect may have something to do with this error message:

Event Type: Failure Audit
Event Source: Security
Event Category: Policy Change
Event ID: 615
..
User: NT AUTHORITY\NETWORK SERVICE
..
Description:
IPSec Services: IPSec Services failed to get the complete list of network
interfaces on the machine. This can be a potential security hazard to the
machine since some of the network interfaces may not get the protection as
desired by the applied IPSec filters. Please run IPSec monitor snap-in to
further diagnose the problem.

This is very frustrating as I cannot find anything to suggest why this keeps
happening. Does anyone know why, and how can it be resolved?

Thanks

In the Device Manager look at the NIC/Ethernet card/USB port and make
sure the power setting "Allow the computer to turn off this device to
save power" is not selected.

 

[frodo]

FWIW, wireless can be messed up by cordless phones and microwave ovens.
Does your disconnect occur when someone uses the phone in the house, or
turns on the microwave? Then that's it. You can try changing the channel
the phone uses (or the router uses, but it's easier to just hit the button
on the phone).

 

[Guest]

In the Device Manager look at the NIC/Ethernet card/USB port and make
sure the power setting "Allow the computer to turn off this device to
save power" is not selected.

Really, you found it! (was: USB Controllers/USB Root Hub) It seems that the
problem has gone. If I remember right, there was another question here
resembling this one. If I cand find it I'll refer him/her to your answer.

Btw., how is this setting so far buried, and doesn't automatically follow
the other power management settings (monitor, hard drive etc.)...

Many thanks!!!
Timo

 

[Guest]

Thanks for your response. It seems this was the power management issue
suggested by Elmo.

Timo