How do I change the MTU setting in Windows 7?

Anonymous
2009-10-06T21:43:31+00:00

I need to change the MTU to 1458 to work with my router.

I cannot find where to do this in Windows 7...

Windows for home | Previous Windows versions | Internet and connectivity

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Anonymous
2009-10-07T11:30:13+00:00

You could try this...

http://networking.nitecruzr.net/2007/11/setting-mtu-in-windows-vista.html

What router do you have? Personally I have never had to manually manipulate the MTU value on any of my PCs ever.

MS-MVP Windows Desktop Experience, "When all else fails, read the instructions"

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  1. Anonymous
    2011-09-17T10:55:57+00:00

    Are you an admin user when you run the command that is failing?

    You also might try this...

    1. Open a command line window as an Administrator (ie. right click on All Programs > Accessories >Command Prompt and select Run as administrator) ...
    2. Type the command netsh and wait for prompt
    3. Type the command interface and wait for prompt
    4. Type the command ipv4 and wait for prompt
    5. Type the command set subinterface "Local Area Connection" mtu=xxxx store=persistent

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  2. Anonymous
    2012-03-14T22:15:11+00:00

    after finishing in netsh you type exit to get back to the cmd prompt.

    Below is a full listing of how you get into and out of netsh.

    you of course can just type netsh interface ipv4 show subinterface to get the same listing.

    Your MTU = 1400.  You obviously have changed it.

    This command fix is effective immediately.

    I typed the command, hit enter, and the bad behavior stopped.

    You could try other MTU values but it is possible your issue is not related to MTU.

    C:>netsh

    netsh>interface

    netsh interface>ipv4

    netsh interface ipv4>show subinterface

    MTU  MediaSenseState   Bytes In  Bytes Out  Interface

    ------  ---------------  ---------  ---------  -------------

    4294967295                1          0    1223814  Loopback Pseudo-Interface 1

    1500                5          0          0  Local Area Connection

    1500                1  11714807829  530606062  Local Area Connection 2

    1500                1          0    1304844  VirtualBox Host-Only Network

    netsh interface ipv4>exit

    C:>

    Does this answer your question about what do I do next?

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  3. Anonymous
    2011-10-06T20:31:17+00:00

    My Windows Life email does not work I have had done everything I was told to do, but still I have the same answer for the last 10 or 11 month and I quote"

     Windows Life is synchronizing this account check back in a fe minute to read your messages

    Of all thing I have done I went to cmd and discovered that my MTU is very high muth above 1500

    when message is sent from WLM error0X800 48849 comes up and some time other(s) error code ??

    Help Please

    P.S. my Hotmail is working O.K

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  4. Anonymous
    2011-09-17T12:50:10+00:00

    Are you an admin user when you run the command that is failing? yes

    You also might try this...

    1. Open a command line window as an Administrator (ie. right click on All Programs > Accessories >Command Prompt and select Run as administrator) ...
    2. Type the command netsh and wait for prompt
    3. Type the command interface and wait for prompt
    4. Type the command ipv4 and wait for prompt
    5. Type the command set subinterface "Local Area Connection" mtu=xxxx store=persistent
    6. comes back with element not found I have tried a few ways no luck
    7. any help will be met with gratitude
    8. thank you

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