4G LG 600 usb modem
walk711
Newbie

This modem won't connect, and I get error message WMC671, and cannot find what this means

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wvranch
Enthusiast - Level 1

I may have stumbled on the fix for the error code WMC-671 with the VL600 USB Modem.

 

I like the rest of you have been plaqued with the error code WMC-671, dropping connections, automatic reconnections with high noise levels, etc ... I have done all the things that everyone else has done and gone through the ordeal with the two levels of tech support and got absolutely no where.

 

Today I got a message on my computer saying that my connection was public on my desktop PC. So I went to the control panel under HomeGroup (Windows 7) and changed it from Public to HomeGroup. Ever since I have done that, for whatever reason, I have not experienced the problem anymore. I'm not losing connections nor getting the error code when trying to connect. I don't know if it is just a fluke but if it is I will accept it. If it is not and it helps others, great.

 

Just wanted to share the info and hope you have the same results. 

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24 Replies
4G107
Newbie
This doesn't work either!!!
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4G107
Newbie
Umm that would be WRONG pal!
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edgarsdroid
Newbie
It is not a network issue. It's a computer issue. If your pc is running low n battery it will disable the network drivers in your pc for power consumption.
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4G107
Newbie

Hey Edgarsdroid!!

 

You are WRONG! It is network all the way! These 4 G USB Cards do not work!!!

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gfgillespie
Newbie

I just solved my LG VL600 WMC671 problem.  Check with Verizon and make absolutely sure that the VL600 IMEI number on your receipt or box barcode and the SIM card ICCID number on your receipt or SIM card package are correctly setup in Verizon's computer.  Mine weren't and the device did not work.  Once Verizon corrected them, the device worked immediately.  Good Luck.

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gfolk73
Newbie

 


edgarsdroid wrote:
It is not a network issue. It's a computer issue. If your pc is running low n battery it will disable the network drivers in your pc for power consumption.

 

I've tried the LG VL600 on two computers, one a laptop running Windows XP, and the other a Toshiba Netbook running Windows 7 Starter edition. Everytime I've tried I have had the computers plugged into AC from the wall, never running off of battery. I have tried all 3 USB ports on both computers, and everytime I've gotten the "Error WMC671" error. 

 

I just uninstalled the VZ Access Manager software completely (and the drivers), rebooted, and reinstalled the latest version of VZ Access manager that I just downloaded from the website (and confirmed it was the latest by doing the "check updates" and got "you are running the latest version"), and I still get the Error WMC671. 

 

I have NEVER gotten this modem to connect on 4G, 3G, or any cellular network. 

 

This issue is most definitely NOT "solved". 

 

 

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wvranch
Enthusiast - Level 1

I may have stumbled on the fix for the error code WMC-671 with the VL600 USB Modem.

 

I like the rest of you have been plaqued with the error code WMC-671, dropping connections, automatic reconnections with high noise levels, etc ... I have done all the things that everyone else has done and gone through the ordeal with the two levels of tech support and got absolutely no where.

 

Today I got a message on my computer saying that my connection was public on my desktop PC. So I went to the control panel under HomeGroup (Windows 7) and changed it from Public to HomeGroup. Ever since I have done that, for whatever reason, I have not experienced the problem anymore. I'm not losing connections nor getting the error code when trying to connect. I don't know if it is just a fluke but if it is I will accept it. If it is not and it helps others, great.

 

Just wanted to share the info and hope you have the same results. 

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wvranch
Enthusiast - Level 1

Well scratch everything I said as I just had a failure so it was just a fluke that it lasted so long. But I think I can say with some confidence that the 4G VL600 modem is a piece of crap. Never had a problem with my 3G USB 760 modem.

 


wvranch wrote:

I may have stumbled on the fix for the error code WMC-671 with the VL600 USB Modem.

 

I like the rest of you have been plaqued with the error code WMC-671, dropping connections, automatic reconnections with high noise levels, etc ... I have done all the things that everyone else has done and gone through the ordeal with the two levels of tech support and got absolutely no where.

 

Today I got a message on my computer saying that my connection was public on my desktop PC. So I went to the control panel under HomeGroup (Windows 7) and changed it from Public to HomeGroup. Ever since I have done that, for whatever reason, I have not experienced the problem anymore. I'm not losing connections nor getting the error code when trying to connect. I don't know if it is just a fluke but if it is I will accept it. If it is not and it helps others, great.

 

Just wanted to share the info and hope you have the same results. 


 

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Android10
Contributor - Level 3

Try removing  the device, then wait 5 seconds and reinsert the device.


If problems persists:



Try rebooting the the PC.  

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kmyvz
Newbie

It sounds as the stance VZ Wireless is taking is that it's not their problem but ours.

We can either spend countless time reconnecting and rebooting or change providers.

 

The overall support from VZ wireless has been terrible lately. It's time to move.

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Not applicable
The solution is simple. Stay away from 4G until Verizon gets their 4G network working properly. Anyone who would buy a 4G device right now is nuts.
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borbor
Newbie

In my case, I had to call tech support.  The 4G card I had upgraded to did not get activated.  They took off the older card, activated the new one and it worked.  Hope this helps someone.

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gshock31
Newbie

My internet connection was timing out all the time.  So I went to the Verizon Store and showed them.  They felt I needed a new Modem.  I bought this Modem.  In other words, I wasn't trying to upgrade for the sake of upgrading.   This thing gives that error code a lot.  Sometimes I can get online with it, and sometimes I can't.  I am using Windows Vista, so I don't have a Homegroup option.  In my personal Opinion the Modem is flaky.  I wouldn't recommend it to anyone.   Today It wouldn't let me get online, so I just started plugging it into different usb ports.  Finally one of them said "Installing Driver"  And now I'm online.  But most of the time, when I get that error code, I just unplug the modem and plug it back in, until it decides to work.  It's very aggravating.  I hope Verizon will read what you all and I have said, and finally address the issue.  It's probably something simple like a firmware upgrade.

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Denevive
Newbie

Alright guys: the problem that you're experienceing is due to the power draw of the LG 4G modem. This device draws the maximum amount of power through the USB port, which Windows doesn't like. Your computer attempts to manage the power of the connection, which causes the WMC671 error that you are receiving. Strictly speacking, this is not a service or device error. The LG is performing to specification, and it is drawing an approved amount of power through the USB port, your computer is the issue (or your settings more accurately). The computer system is simply cutting and managing power in an attempt to extend the battery life of the laptop. So, rather than blame Verizon Wireless or LG (since it really isn't their fault), try making the following adustments to your computer:

 

1. Go to your Control Panel in Windows. You may access this by going to: Start > Settings > Control Panel.

2. Make sure you are in "Classic View" as opposed to "Category View" and select "Device Manager".

3. Scroll on down to the "Universal Serial Bus Controllers", expand the category and look for any "USB Root Hub"s.

4. Right click each "USB Root Hub" and select "Properties"

5. Click the "Power Management" tab at the top of the new window.

6. Uncheck the "Allow the computer to turn off this device to save power." check box.

7. Save, exit, close out of Device Manager and remove the USB modem.

8. Reboot your computer, plug the modem back in, and access the internet.

 

If the above steps don't resolve your problem, I'll be extremely surprised and will likely be due to a faulty device issue.

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edgarsdroid
Newbie

You have to make sure your computer is plugged in to the wall.  A lot of computers have a battery saving mode that disables some of the network adapters for power comsumption, make sure you change the settings for the future but after you plug in your computer to the wall you might want to restart VZW or your computer and it should work again.  It's a computer issue not your verizon wireless modem.

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MiamiGuy
Newbie

Had the WMC671 error code for the first time this morning after almost two months of use.  The modem would not work in either my desktop or laptop.  I figured it must be a modem problem so I took it back to the store and told them the error code.  After some consulting with the resident 4G tech, I was told it was a network problem they were experiencing affecting only 4G devices and would soon be corrected.  After I returned home some time later I tried the card and it worked fine.  So, evidently it sometimes is the network.

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pwhart
Newbie

This does not work. I have the same error code regardless of what I tried. I have go far as to wipe the computer and reinstall Windows 7 Home Premium and then installed the Verizon software - same error WMC671

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momogunner
Newbie

I've had the same problem ever since I got the G.  It is sporadic with no pattern that I can see.  I keep trying or sometime have to reboot.  Would be nice to get a real explanation.  NEVER had any trouble before getting the G.

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Android10
Contributor - Level 3

The error code  WMC671 usually means there is a problem with the USB device.  It could be a  power  consumption  issue due to conflicts with power management settings or a dormancy issue.   Usually closing VZAccess Manager and then removing and re-inserting the USB device will correct the issue.  If the issue is not corrected after that a reboot of the computer is recommended. 

 

 

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PaulD
Newbie

Noah, 

 

Unfortunately, I'm still receiving the same error code.  I've adjusted my power settings and even flashed the firmware on the usb dongle.  I also tried several different USB ports to no avail.  Drivers installed just fine after plugging the device in.

 

I received the VL600 USB modem last Friday.  I'm working off of a Windows 7 64-bit laptop.

 

I really need a functional usb modem at the present moment and I'm considering switching to a different carrier to get something that works.

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