Microsoft Loopback Adapter

Discussion in 'Windows 7 Networking' started by Chris86, Sep 11, 2011.

  1. Chris86

    Chris86 New Member

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    hello, first time posting here. I have been trying to install the microsoft loopback adapter on my system. everytime i tried to do it i get an error at the end that says "An error has occurred during the installation of the device. A device attached to the system is not functioning"

    been using google to search for solutions but to no avail.

    what exactly is the device used for the loopback adapter? what can i do to make it function again so as to enable installation of the loopback adapter?

    many thanks in advance
     
  2. Trouble

    Trouble Noob Whisperer

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    As far as I know there is no need for any other device to support the Microsoft LoopBack Adpater.
    Just open device manager
    right click you computer at the top of the tree and choose add legacy hardware, then next, then Install the hardware that I manually select from a list, next, then select network adapters, then next, then select microsoft in the left column and Microsoft Loopback Adapter from the right column, then next, then finish.
    If that is what you are doing and you are getting the error that you mentioned above, then I would suggest opening an elevated command prompt and typing
    sfc /scannnow
    Welcome to the forums and keep us posted.
    Regards
    Randy
     
  3. Chris86

    Chris86 New Member

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    Thank you for your reply Randy.

    i did as u said, thats exactly the process i used to install the adapter, i also ran the scan and no integrity violations was found.

    tried to install again after the scan but i still have the same problem.

    anything else i can try?
     
  4. Saltgrass

    Saltgrass Excellent Member
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    I haven't heard the phrase loopback adapter is so long, I assumed it was no longer necessary. Do you mind explaining why you feel you need one?
     
  5. Chris86

    Chris86 New Member

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    am actually an IT student, was told that i would need one for my laptop for my project... is the adapter considered obsolete?
     
  6. Saltgrass

    Saltgrass Excellent Member
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    The loopback adapter I last heard about was for a modem, but since I am not an IT specialist, I don't know much about techniques used today.

    The remaining was not really relevant, but do you have a physical device, just a dummy asking... I did install it on my system, as was described with no error messages, but I have no way to use it, as far as I know.
     
    #6 Saltgrass, Sep 12, 2011
    Last edited: Sep 12, 2011
  7. Chris86

    Chris86 New Member

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    it was for my networking class project.. was supposed to create a server of some kind. and i am a bit confused, wat physical device? NICs? what i know about the loopback adapter is that it acts as a dummy device of some sort? which is why i am puzzled as to why would the system report an error about a device is not functioning
     
  8. Trouble

    Trouble Noob Whisperer

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    I think what Saltgrass was asking is if you actually have a real physical network adapter card present on your system?
    Would you please enable the built-in/hidden administrator account on your Windows7 computer, log off and log on with that account and see if you can install the loopback adapter.
    If you're not sure how to do that read here Enable and Disable the Built-in Administrator Account
     
  9. Saltgrass

    Saltgrass Excellent Member
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    The learning curve is starting to level out a bit, so I have one question and a suggestion.

    Is there any chance during your classwork that your system was modified and thereby creating a problem for the install?

    The suggestion is to check the install log. It is organized by day so you can go close to the bottom and find the day you tried to install. Perhaps it will show something that would indicate where the error is. If you find something (or not) you might copy some of the text and attach the file using the paperclip in the Advanced reply. Since I just installed the Microsoft Loopback Adapter on another computer, I can compare my log to yours.

    C:\Windows\inf\setupapi.dev.log

    And the physical device was because I was still thinking 20 years ago, but there are physical loopback devices, they just don't go by the name you indicated in your post, which was my error.

    Edit: The netloop.inf seems to be used to install the device. Possibly something listed in it will lead to a missing file or some such thing.
    c:\windows\system32\driverstore\filerepository\netloop.inf_amd64_neutral_856142fd87f1c21a\netloop.inf
     
    #9 Saltgrass, Sep 13, 2011
    Last edited: Sep 13, 2011

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