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I've this problem when I want to use "Host only" network adapter in VM-Ware 7.0 this is the error message:

The host-only adapter driver does not seem to be running. If you have not rebooted the host since installing the host-only network adapter, you need to do so before you can use this support. Otherwise, check the system Event Log for an explanation of why service VMnetAdapter did not startup properly. Failed to connect virtual device Ethernet0.

I looked at my device manager in the host system "Windows 7" but I couldn't find the VMware network adapter at all.

And I tried to reinstall it by "Virtual Network Editor" but it doesn't work

So please how to reinstall these drivers and adapters ?

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Did you manage to figure out how to reinstall the VM nics? –  Synetech Jul 13 '11 at 3:21
    
No i didn't till now –  Wahid Bitar Jul 19 '11 at 11:40
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5 Answers

It seems that few people have needed to reinstall the host virtual adapters (or at least if they did, they just resorted to reinstalling VMWare instead of just the adapters), so it’s no surprise that there are very few references to fixing it. Fortunately, it has come up and a solution does exist.

What you need to do is to use the vnetlib utility (it should be in the VMWare installation directory).

Someone on the VMWare forums has attempted to document the vnetlib command and another tried to use it to add the host virtual adapters.

Ulli Hankeln has done an even more through job of documenting vnetlib at his Sanbarrow site (which basically, is the online VMWare bible). He also lists a few other ways to manage the network settings.

Anyway, what you can do is to manually reinstall the adapters by using the add adapter argument to vmnetlib, and then managing all the settings, but it’s much easier to just reinstall the VMWare network services:

> vnetlib.exe -- install devices
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Stop the VMware services first, then run the following command:

vnetlib.exe -- install devices

On a 64-bit system replcae vnetlib.exe with vnetlib64.exe.

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I disabled my VMware network adaptor in Windows 7.

After enabling it in Windows 7, it also works again in VMware.

See if that works for you.

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That does not apply because he does not have a VMWare network adapter in the host OS, so he can’t disable/enable it. He’s asking how to re-install it. –  Synetech Jul 13 '11 at 3:21
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I had the same issue, and I fixed it by re-running the installation and selecting Repair as the option. That fixed the network problem, found in this solution.

I also tried the other answers without success.

vnetlib.exe -- install devices

I'm using Windows 8 with VMware Player 6.0.1 build-1379776

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Run vmnetcfg.exe and just press "Restore Default".. :)

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Welcome to Superuser, please be aware single line answers are commonly frowned up on :( could you elaborate on your answer –  50-3 Oct 2 '13 at 12:28
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