MTU in Windows Vista

Start cmd as Administrator. To check MTU issue:
netsh interface ipv4 show subinterfaces
This will give you a list of network adapters with MTU

To change the MTU issue following
netsh interface ipv4 set subinterface "YYY" mtu=xxxx store=persistent

Where “YYY” is a network interface name like “Wireless Network Connection”.

Can’t delete device driver in Vista

After uninstalling Vista SP1 you may get the yellow triangle error for
the wan miniport (SSTP). You can’t uninstall wan miniport (SSTP) or
delete it.

This is the solution:
Use the following commands to be carried out as the user Administrator
(Run as Administrator) from Command prompt (cmd):
netcfg -e -u ms_sstpminiport

You may have to find the course Hardware ID device from the Device
Manager and selecting the Details tab-> Hardware IDs if it is not
‘ms_sstpminiport’ which is causing the problem.

Taken from: Here

Vodafone Mobile Connect software does not want to connect

Vodafone VMC Lite does not want to connect to the network if if is executed under Windows XP user with restricted privileges. The software comes up, but saying “No device” and no chance to connect.

How to resolve this: Login as Administrator, Uninstall VMC Lite and install full featured VMC software from Vodafone. Connect to the network. Then login as user and try to connect again – it should work now.

Bear in mind that WinXP is treating every USB port available as separate instance, not connected to each other.. so being logged in as Administrator plug in USB modem to every available port and connect. Otherwise you’ll hear moans from users saying modem is not working.

Simple solution, but I’ve spent quite a time to figure out the way.
RIP Vodafone -)

Remove Device Drivers from Windows Vista

Sometimes you need to remove device driver manual, because Device Manager in Windows does not want to remove anything and gives you “Error 31”.
If this is your case, this is the guide for you. I’ve spent a sleepless night trying to figure out how to fix this problem..
In my case that was Network Adapter Drivers that did not want to work. Wireless adapter did have a yellow triangle and in properties it showed Error 31. All the attempts to remove the device or driver did not work – the device just appeared again. So I had to manually remove the drivers.

Run device manager find your driver file and *.inf file are used by this device.

For driver files you have to read providers. If provider is Microsoft you can’t touch driver and
driver service – you can only remove non-system drivers

Remove registry folder:

Next remove driver files (*.dll,*.sys) ,*.inf file relate to your device you can find in


Don’t forget to do full backup of registry and not completely delete driver files, but misplace them: put in C:\tmp

Information taken from this discussion:

Win XP is not executing any applications or *.exe files

When WinXP is not executing any applications or *.exe files, this likely that the system is full of viruses, so better do a full scan with anti-virus that is run from bootable CD (there are a lot of them available, like Hiren’s CD or bootable Dr.Web).

After virus clean-up download this registry fix file and run it. This should fix the problem.

Vista wireless problem

Problem: Vista can not connect to wireless network.. the system can not see the DHCP server in router and getting 169.254.x.x ip address which is private and no use at all.
To resolve this go to registry, find
Where GUID is a id for that network adapter – you will see the difference if another one is wired and connected.
Add new entry (DWORD 32), call it DhcpConnDisableBcastFlagToggle and assign value 1.
Change entry DhcpConnForceBroadcastFlag to 0.
Try to reconnect.