Error message when you try to set an IP address on a network adapter

Some times when you change your network card, the last IP configuration is not clean, and when you trying to set the new IP address, you receive and error similar to:

The IP address XXX.XXX.XXX.XXX you have entered for this network adapter is already assigned to another adapter Name of adapter….

You try following steps to remove all IP configuration:

1) Open the command line, type in run programs cmd, and press Enter

2) Type set devmgr_show_nonpresent_devices=1, and press Enter

3) Type devmgmgt.msc, and press Enter

4) Select View > Show Hidden Devices menu

5) Go to tree view and expand network adapters

6) Select the all network adapter

7) Right Click and select Uninstall

Next time, you do not have any problem to configure your IP address

Also you can review other details in http://support.microsoft.com/kb/269155

Multiple connections to server or shared resource error

Sometimes when you try to access any shared resource you obtain an error similar to:

\\10.x.x.x\Shared is not accessible. You might not have permission to use this network resource...

Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed...

How to fix this error?

Open the command line from run program using cmd

Run following command: net use * /delete, it will deleted all open shared connections

Try newly to access your shared resource

How to delete an specific shared resource

Open the command line from run program using cmd

List all reousrces using following command: net use

delete an specific shared resource with following command: net use \\10.x.x.x\shared /delete

Try newly to access your shared resource