What is the reason why some applications on the computer can t be connected to the Internet, and the

Most of this situation should occur in the LAN, if it is a home computer, there should be no such thing, in the unit, set up a network administrator, at the entrance of the optical fiber, install a large switch, the network administrator will set up a local area network, behind the switch, is a large junction box, from the junction box to distribute a network cable, connected to various offices, often, the unit for normal work, will restrict the use of some applications by employees, such as game QQ chat, etc., In the local area network, each user's client, no matter what method you use what router, can not avoid the network administrator, if the situation is really the above, the landlord can contact the network administrator of the unit, let him help improve his own use rights, the higher the permission, the higher the network bandwidth that can be applied, for example, if you are the leader of the unit, it should be the permission, the highest, then your computer has no limit, the situation is basically like this,。。

If it is a personal home computer, some applications can not be connected to the Internet, the first consideration is that these applications may be damaged, that is, some applications are in the program folder, resulting in confusion or loss, this situation should be in the cleaning of computer garbage, accidentally cleaned up, the solution is, open an application, if you can't connect to the Internet, delete this application, re-install it once, the final solution, reinstall the system, so that you can put all the viruses, Trojans, setting errors, File loss, blah blah blah, all corrected, if there is a problem with the router's settings, press and hold the three switches of the router, hold it for more than 10 seconds, restore it to factory settings, and then use your phone or computer to set it up again, thank you!

Enter the router to set up application control.

It should have been intercepted by some security software, just turn it on.

There are several reasons for this:

1. The application itself cannot connect to the Internet. You can restart the app or uninstall it and reinstall it.

2. The DNS of the computer is unstable. Changes can be made manually or with other software.

3. The regional network is unstable. It may be that your router is unstable or that there is a problem with your entire area network. The router can be restarted.

4. Firewall blocks applications. Change the firewall settings, or turn off the software that conflicts with the application.

5. There is a virus in the computer. It is recommended to enable safe mode to detect viruses or redo the system.

In the above cases, the most likely ones are 4 and 5.

Hello, this situation is generally due to the installation of some domestic optimization software for "optimization" or "junk cleaning", resulting in the driver of the network card is disabled or lost.

You just need to uninstall the optimization software, reinstall the driver of the network card once, and the problem will be solved.

If it is a wireless network card, and it still can't be solved after pressing the above operation, you can try the following methods:

1. Device Manager, right-click on the wireless network card - Properties, and change the default to 20 40 MHz.

2. Open the Network and Sharing Center - Top Left Corner - Manage Wireless Network, pop up the relevant icon, and right-click the previous wireless network - Delete Network.

3. After deleting, reconnect to the wireless router, enter the user name and password, and then pop up the window, be sure to select the public network.

If it still doesn't work, you can try to connect the router with wires first, then log in to the router's management page, find the wireless network settings page, change the band bandwidth to 20MHz, and then save and exit, which can generally be solved.

There are several reasons for this:

1. The application itself cannot connect to the Internet. You can restart the app or uninstall it and reinstall it.

2. The DNS of the computer is unstable. Changes can be made manually or with other software.

3. The regional network is unstable. It may be that your router is unstable or that there is a problem with your entire area network. The router can be restarted.

4. Firewall blocks applications. Change the firewall settings, or turn off the software that conflicts with the application.

5. There is a virus in the computer. It is recommended to enable safe mode to detect viruses or redo the system.

In the above cases, the most likely ones are 4 and 5.