Why can't I deactivate and enable a network connection?

I open a computer company, but also maintain some internet cafes. Due to the excessive optimization, there is a strange problem. After study, the solution is now available.

Network connection can not normal disconnect and connect the network, mainly in the network connection in the right click the local connection icon, in the pop-up menu select "Deactivate" will pop-up disabled Connection error dialog box, the content is "cannot deactivate the connection at this time." This connection may be in one or more protocols that do not support Plug and play, or it is initialized by another user or system account. "When you right-click on the disabled Local Area Connection icon to select Enabled, the Enabled dialog box pops up and then prompts the connection failure!". This occurs because the security Catalog database file (CATDB) has been corrupted.

And the system has one for "Cryptographic Services" service, mainly provides three kinds of management services: 1. Catalog database service, mainly used to determine the signature of Windows files; 2. Protected root service for managing certificates for computer-trusted root certification authorities; 3. Key service, which is used to help register computers to obtain certificates. So to solve this problem we need to stop this service and replace it with a security catalog database file (CATDB) that is not corrupted. The location of the General Security Catalog database file (CATDB) is in the CatRoot2 subdirectory of the system directory, and the local connection related files are in the {f750e6c3-38ee-11d1-85e5-00c04fc295ee} directory under the CatRoot2 subdirectory, The wireless network connection is generally in the {127d0a1d-4ef2-11d1-8608-00c04fc295ee} directory under the CatRoot2 subdirectory. We assume that the system is installed on the C disk, then the path to the local connection-related security Catalog database file (CATDB) in Win2000 is:

"C:winntsystem32catroot2{f750e6c3-38ee-11d1-85e5-00c04fc295ee}catdb"

The path to the wireless network connection-related security Catalog database file (CATDB) is:

"C:winntsystem32catroot2{127d0a1d-4ef2-11d1-8608-00c04fc295ee}catdb"

The path to the local connection-related security Catalog database file (CATDB) in the WinXP system is:

"C:windowssystem32catroot2{f750e6c3-38ee-11d1-85e5-00c04fc295ee}catdb"

The path to the wireless network connection-related security Catalog database file (CATDB) is:

"C:windowssystem32catroot2{127d0a1d-4ef2-11d1-8608-00c04fc295ee}catdb"

Here are a few quick ways to deal with this:

1. Stop the "Cryptographic Services" service before restarting the Cryptographic Services service.

2. You can right-click the local connection, select Properties, in the pop-up dialog box, click the "Configure" button and select "Use this device (enabled)" or "Do not use this device (disable)" In the Drop-down box for device usage, which can achieve the purpose of disabling or enabling local connectivity, but does not solve the problem.

3. Right-click on my Computer, select Management, select Device Manager on the left, then locate your network card under the right Web adapter, right-click to select Enable or disable. The same can achieve the goal does not solve the fundamental problem.

4. Uninstall the network card driver, reinstall the driver to achieve the purpose of solving the problem. The method is: Right click on My Computer, select Management, select Device Manager on the left, then find your network card under the right network adapter, right click to uninstall, reboot the computer when finished, reinstall driver, this method is not tested.

5. Some people think that the card can be replaced by a socket to solve the problem, I have not tested, interested people can try!

The source of the skill accumulates, the more source discovers the problem solves the problem. Haha, laugh drunk.