Windows 10: Issues with Devolo duo

Hello everyone,

I have been using Devolo duo 500 wifi for 3 months without any issues but it suddenly stopped working yesterday.

The wifi appears on all my devices (laptop, tablet, phones) and all are connected to it but none can access Internet.
On my PC, when I tried to troubleshoot problems, it said that "one or more network protocols are missing". I googled that and tried several fixes (command prompt netsh thing / verifying that ipv4 was getting an IP automatically...) but they didn't work.

I tried to pair the plugs again, no success either.

Now a few things that I noticed and found weird:
- The Wifi Plug does not appear on Devolo Cockpit, yet my TV, which is plugged via ethernet on the Wifi CPL is working...
- Yesterday, Internet stopped working on the mac desktop computer (which is plugged directly to the box via ethernet) as long as the ethernet cable linking the first Devolo CPL to the box was plugged. When I removed the ethernet linking the CPL to the box, everything worked again on the desktop (the TV stopped working but that make sense).

Any idea what the issue might be ?

PS: Sorry for my english, it's not my native language

Many thanks in advance,
J

:)

 

DRIVER_POWER_STATE_FAILURE - The bugcheck was: 0x0000009f (0x0000000000000004, 0x000000000000012c, 0xffffd7803bfa1040, 0xffffd68a0bc8f810)

Hi

I just wanted to let you know that although the Windows repair seemed to have solved the issue at first it returned. The hint from auggy swith Devolo Cockpit solved it for good.

Thanks again to everyone for the help!

Hans

 

DRIVER_POWER_STATE_FAILURE - The bugcheck was: 0x0000009f (0x0000000000000004, 0x000000000000012c, 0xffffd7803bfa1040, 0xffffd68a0bc8f810)

The minidump file showed a PAGE_FAULT_IN_NONPAGED_AREA (50) stop error caused by the npf_devolo.sys :

BugCheck 50, {ffffc00a44001c50, 0, fffff80ce97232ed, 0}

*** WARNING: Unable to verify timestamp for npf_devolo.sys

*** ERROR: Module load completed but symbols could not be loaded for npf_devolo.sys

Could not read faulting driver name

*** WARNING: Unable to verify timestamp for win32k.sys

*** ERROR: Module load completed but symbols could not be loaded for win32k.sys

Probably caused by : npf_devolo.sys ( npf_devolo+32ed )

The npf_devolo.sys which appears to be dated from 2015, appears to be from a program devolo Cockpit and has also been known to cause DRIVER_POWER_STATE_FAILURE (9F) errors such as in the following link:

Driver Power State Failure on Sleep, Hibernate, Restart or Shutdown Solved - Windows 10 Forums

Can you uninstall devolo Cockpit and see if the errors resolve.

Also, make sure Bitdefender is at the latest version.

Afterwards if you are using the devolo Cockpit software you could try reinstalling devolo Cockpit using the latest version.

 

For your PC, why not plug an ethernet cable from the Devolo into the PC so you have a solid connection?

 

Technically because the table on which my laptop is too far from the devolo (and moving the devolo would mean loosing the TV).

But anyways, I did pay for a wifi device to have the wifi, not to plug an ethernet cable. And also everything was working fine until yesterday...