How to handle broadband connection errors

Bandwidth connection error 691 (Access denied due to invalid domain user name or password)/error 635 (unknown error) process is as follows:
(1) Incorrect username and password
(2) If the user account and password are correct, proceed to the next step. We recommend that you re-build the dialing software (if you do not know how to install the dialing software, refer to the user again ):
? If the dialing software is normal after being reinstalled, the reason is "the dialing software is lost ";
? If the fault persists after the dial-up software is reinstalled, call 10000 China Telecom (10060 China Netcom/10050 China tietong) to report the fault.
691 broadband connection Error
Error 691 true: 1: an error occurs on the domain name (incorrect user name or password ). 2: the server does not reflect (the user port in the IDC is incorrect or the account is not activated ). 3: The phone or broadband is overdue.
Cause of error 691
1. China Telecom limits the number of users in your account. For example, if you have four users in this account, but now four users are using the account, your dialing error is 691.
2. After you run out, you are not disconnected. At least the server is still not disconnected. I thought you are still using it. It is similar to the above, so error 691
Suggestion: Right-click the broadband connection at each shutdown and click disconnect.
After error 691 occurs, do not stick with your phone and try again in a few minutes. If this problem persists, call the Customer Service Hotline 10000 Telecom (10060 China Netcom/10050 China tietong ), tell the staff that your computer cannot be accessed due to a 691 error. Then she asks "How many broadband numbers are your number?" And tells her your account. Then she sometimes asks who you open an account, answer who opened the account, and she will find someone to help you in a few minutes.
One of the solutions to broadband connection error 691
Solve the inexplicable error 691 problem of ADSL
There is a wireless router in the factory office, and the home is equipped with a new broadband, and there is no router, so I only share an ADSL account with my brother to access the Internet, A network cable is plugged in between two portable devices. However, what is depressing is that the network can be connected when it is inserted in a brother's notebook, but the error 691: incorrect user name/password is always prompted when it is inserted into my laptop. However, I have never mistakenly entered the user name or password, so I have not set the user name or password for a long time !!! Depressing ......
I entered the 10000 million inquiry, and Miss Telecom insisted that I had lost the mistake, not their problem. Later, I searched some related articles on the Internet and finally solved the problem. Originally, China Telecom bound my ADSL account to my brother's network adapter. Solution ):
1. Run the ipconfig/all command on the eldest brother's laptop (Enter cmd in "run" to bring up the command line) to view the network configuration information, find the PhysicalAddress in the local connection and record it.
2. Go to my local file, enter the Device Manager, find the network adapter in the network adapter, right-click the network adapter name, and select Properties to go to the "advanced" tab, select NetwotkAddress in the Left box, select "value" on the right, and enter the recorded MAC address (case insensitive, do not add the "-" symbol.
You may also encounter this in the future. Please study it !!!
Broadband connection error 623 (phone book project not found)
Step 1: Check whether there are firewall or 3721 netassistant software. If yes, we recommend that you exit.
(1) firewall and 3721 netassistant post-test: if the fault is resolved, "user software problems ";
(2) If the fault persists, proceed to the next step;
Step 2: Instruct the user to check the NIC status and unplug the network cable:
(1) If the fault is resolved, the fault is caused by "pc hardware problems ";
(2) If the fault persists, proceed to the next step;
Step 3: if conditions are met, we recommend that you delete and install the dial-up software and a CD (Win98 requires a NIC drive disk), and then try again:
(1) If the fault is resolved, it is a "pc hardware problem ";
(2) If the fault persists, proceed to the next step;
Step 4: When the above processing is invalid or simple cooperation operations cannot be performed, please call the Customer Service Hotline 10000 Telecom (10060 Netcom/10050 tietong) to report the obstacles
The bandwidth connection error 678 (remote computer does not respond) is handled as follows:
Step 1: Check whether the MODEM signal is normal and restart the modem normally. For more information, see Step 2.
Step 2: Check whether the user has any firewall or 3721 netassistant software. If yes, it is recommended that the user quit.
(1) firewall and 3721 netassistant tests: if the fault is resolved, the fault is caused by "user software problems ";
(2) If the fault persists, proceed to the next step;
Step 3: Instruct the user to check the NIC status and unplug the network cable:
(1) If the fault is resolved, enter the Fault Cause as "pc hardware problem ";
(2) If the fault persists, proceed to the next step;
Step 4: if conditions are met (the user has a dial-up software and a CD (Win98 must have a NIC drive disk), we recommend that you delete the dial-up software and reinstall the NIC driver and then install the dial-up software:
(1) If the fault is resolved, fill in the following: the fault symptom is "dial-up connection timeout", and the fault cause is "PC hardware problems ";
(2) If the fault persists, proceed to Step 7;
Step 5: Determine whether the telephone line behind the MODEM is available and whether the separator connection is correct:
(1) After the MODEM is connected, the phone cannot be used, but other phones with the billing number can be used. We recommend that you change the telephone line because of "User internal line failure ";
(2) If none of your phone numbers can be used, call the Customer Service Hotline 10000 Telecom (10060 China Netcom/10050 China tietong) to report the obstacles. Step 6: if the above processing is invalid or the user cannot perform simple cooperation, please call the Customer Service Hotline 10000 Telecom (10060 Netcom/10050 tietong) to report the obstacles.
Bandwidth connection Error 645 is caused by a dial-up software file damage (common in XP systems). The process is as follows:
Step 1: if conditions are met (the user has dial-up software), we recommend that you reinstall the dial-up software. If the fault is resolved, the fault is caused by the "user Software Problem". If the fault persists, we recommend that you contact a computer company to repair the computer system. The fault is caused by "user software problems ";.
Step 2: If the above processing is invalid or the user cannot perform simple cooperation operations, call the Customer Service Hotline 10000 Telecom (10060 Netcom/10050 tietong) to report the obstacles.
Broadband connection error 720 is common in the XP system. Generally, the system can be restarted multiple times and 90% can be used. The process is as follows:
Step 1: We recommend that you restart the system and then re-dial the Internet:
(1) If the fault is resolved, no fault causes exist.
(2) If the fault persists, it is recommended that you restore the system or contact a computer company to format and reinstall the system. After reinstalling the system, you can immediately disable the system update function.
Step 2: If the above processing is invalid or the user cannot perform simple cooperation operations, call the Customer Service Hotline 10000 Telecom (10060 Netcom/10050 tietong) to report the obstacles.
Broadband connection error 721 (remote computer does not respond). Most of this problem is the USB interface Modem fault code. You can follow these steps:
Step 1: Determine whether the MODEM signal lamp is synchronized. For how to synchronize the signal lamp, see Step 2. For how to synchronize the signal lamp, see Steps 3, 4, and 5.
Step 2: If the traffic signal is synchronized, an error (OA or OE) is selected for the user agreement. If not, call the Customer Service Hotline 10000 Telecom (10060 China Netcom/10050 China tietong ).
Step 3: If the signal lights are not synchronized, determine whether the telephone lines behind the MODEM are available. If the phone lines cannot be used and other phone lines with the billing number can be used, you are advised to change the telephone lines by yourself, if none of the phone numbers of the user's home account can be used, if not, call the Customer Service Hotline 10000 Telecom (10060 China Netcom/10050 China tietong.
Step 4: Check whether the separator is reversed.
Broadband connection error 718, a few of which are client problems:
Step 1: We recommend that you restart your computer and then perform a dial-up test:
(1) If the fault is resolved, there is no cause of the fault.
(2) If the fault persists or cannot be easily cooperated, you can call the Customer Service Hotline 10000 Telecom (10060 China Netcom/10050 China tietong) to report the fault. String 5
Bandwidth connection error 734 (PPP connection control protocol terminated)/error 735 (request address rejected by Server
Step 1: restart your computer.
Step 2: an error occurs in the dialing software. We recommend that you reinstall the dialing software, which is common in the built-in dialing of the XP system.
Step 3: If the above processing is invalid or the user cannot perform simple cooperation operations, call the Customer Service Hotline 10000 Telecom (10060 Netcom/10050 tietong) to report the obstacles.
769 broadband connection Error
Error 769: unable to connect to the specified target.
Problem: the network device on your computer is faulty.
Solution:
Open "my computer"> "Control Panel"> "network connection" to check whether the local connection is in
"Disabled" status. If yes, you only need to double-click the local connection and the local connection status changes to "enabled. If there is no local connection,
Then there is a problem with your Nic 100%-either not installed or broken. Please contact your computer supplier or solve the problem by yourself.
Error 769 is displayed, most of which are Nic disabled. enable it! The cause is generally caused by incorrect user operations or firewall software or computer viruses. If the local connection is not found, it is generally because the driver of the NIC is lost or the computer does not detect the NIC, You can reinstall it.
Error cause: Nic disabled
Solution: Right-click the computer, select properties, and then choose device management. Then, check the NIC Driver. If "x" is used, the NIC is disabled, right-click to activate the NIC.
Causes and solutions for broadband connection error 769
Causes of 769 broadband connection Error
Generally, if one of the following conditions exists, you will receive error 769:
1. The network cable is disconnected.
2. the modem is disabled.
3. the modem driver is damaged.
4. The computer is running spyware, which hinders connection.
5. Winsock needs to be repaired.
6. The third-party firewall software blocks the connection.
Solution:
To find the cause of the problem, follow these steps.
Step 1: Make sure the network cable is connected
Make sure that the Network cables are connected to the computer and the modem respectively. If your computer is connected to a hub or router, make sure that the cable from the hub or router to the modem is connected.
Step 2: Make sure the network adapter is enabled
1. Click Start, click Run, type ncpa. cpl, and click OK ".
2. Right-click the "local connection" icon. Click Enable (If this option is available ).
Step 3: reset the modem
1. Disconnect the cable from the computer to the modem.
2. Disable the modem. If the modem does not have a power switch, cut off the power of the modem.
3. Wait for two minutes.
4. Open the modem and connect the cable from the computer to the modem.
Step 4: Use the Device Manager to uninstall and reinstall the modem and driver.
Before proceeding, you may have to download the latest driver for the network adapter from the hardware manufacturer. 1. Click Start, click Run, type sysdm. cpl, and click OK ".
2. Click the hardware tab, click Device Manager, and find network adapter ".
3. Expand "network adapter", and right-click the network adapter icon.
4. Click Uninstall and then click OK ". In the dialog box that prompts you to delete the file associated with this device, click yes ".
5. restart the computer. Alternatively, click operation, and then click scan to detect hardware changes ".
6. If a device is found in Windows but does not recognize it, you must install the latest driver for the network adapter.
Step 5: Create a New DSL or cable connection
1. Click Start, click Run, type ncpa. cpl, and click OK ".
2. Click "Create a new connection" under "network task ". After the Wizard is started, click "Next ".
3. Click Connect to Internet, and then click Next ".
4. Click "manually set my connections" and then click "Next ".
5. Select "connect with a broadband connection that requires the user name and password" and click "Next ".
6. Perform the remaining steps. Use the connection information provided by the Internet service provider (ISP) to complete the wizard.
Note: You may have to use the software provided by your ISP to create a new connection.
Step 6: repair Winsock and TCP/IP
1. Click Start, click Run, type netshwinsockreset, and press Enter.
2. When the Command Prompt window blinks, restart the computer.
Step 7: temporarily Uninstall a third-party Firewall
Some third-party firewall software (such as ZoneAlarm and NortonPersonal firewalls) may cause Internet connection problems on computers running Windows XP SP2. You may have to temporarily uninstall these programs to test your computer. It is not enough to disable these programs for testing. Make sure that you have a CD or installation file so that you can reinstall these programs later. If the problem is caused by these programs, you may have to contact the vendor of the Program for help in setting the program.
Note: before deleting a third-party firewall program, you may need to verify that Windows XP firewall is enabled.
Some on Baidu Encyclopedia: 1. Error Codes 718, 619, and 691 are account and password problems.
A. the user enters an error when entering the account and password, so that the user can re-enter the password.
B. If your account expires, go to "IP system" to check whether the account has expired.
C. The account number is stuck on the Internet. This is generally caused by constantly enabling network connections or abnormal hanging lines when a user goes offline. This allows the user to turn off the power of the CAT and the computer for more than 10 minutes before connecting, it can be solved in general.
D. Account theft: contact the Internet Project Department.
2. Error Code 676: the error code is related to the equipment in the IDC. you can log on to the server several times in a row.
3. Error Code 720: the modem driver settings are incorrect, mainly because the vpi and vci parameter values are incorrect (0/35 for Wanzhou tietong) or the computer needs to be restarted.
4. Error 769: the cause of this error is that the local connection is disabled or disabled by the user, which occurs mainly in users of the Ethernet cat. When the user is offline, the network card is disconnected, causing the network card to be disabled, enable the NIC in "Local Connection.
5. Error 678: Generally, the MODEM indicator is abnormal, and the link light on the cat blinks (showtime is the English logo of a few cats ), refer to troubleshooting failures that cannot be linked or ask users to check their firewalls. If the MODEM indicator is normal, the cause of the fault is that the computer cannot establish a connection with the MODEM. The solution is to restart the MODEM. If it still does not work, it is best to reinstall the system. This problem usually occurs for a long time.
6. In Windows Vista Home Basic, error 815 is often displayed. is a network port problem. it is because of the network fracture connection performance of the network supplier. and the connection field value is incorrect. and General System independence
Add another 678: Error 678, which is a fault message frequently encountered by broadband adsl dial-up Internet users. Simply put, the network is disconnected. Broadband adsl dial-up Internet access is connected using the pppoe protocol, data is transmitted through telephone lines, and data is modulated and demodulated using the adsl dedicated modem. The error message 678 means that the remote computer has no response, it means sending data from the computer to the NIC, including the transmission of telephone lines, the local terminal (the IDC of the Telecommunications Bureau) when the port of the terminal board is processed to return data to the computer, a message indicating a problem occurs during data transmission.

 
Solution
1. First, check that the adsl modem dial-up is normal. Because the IP address automatically obtained by the NIC is not cleared, the NIC cannot be obtained when the dial-up is performed again.
The new IP address will prompt 678. the operation method is: Disable adsl modem, enter the network connection on the control panel, right-click the local connection, and select disable. After 5 seconds, right-click the local connection and choose enable, enable the adsl modem for dialing;
2. If the first step is invalid, disable the local connection (NIC), restart the computer, and start
Use a local connection (NIC) and then enable the adsl modem;
3. If the above steps cannot be solved, check whether the NIC light is on. If the NIC light is not on, refer to the dispatch Knowledge Base: Solution of "Nic light is not on or often not on ".
4. If the NIC lights are normal and cannot be solved in step 1, you will be taken to unmount the NIC Driver and reinstall the NIC Driver. If the user's XP system follows: Knowledge No.: 9973, how to Set up an ADSL dial-up connection in WINXP to lead the user to create a dial-up connection, if the 98 system recommends that the user install Raspppoe software or EHERNET300 software to connect.
5. If the above operation is invalid, contact the Telecommunications Department to confirm the port.
6. adsl modem fault is the main cause.
7. If multiple computers use a vro to access the Internet, try to remove the vro and connect it to Internt. If you can access the Internet smoothly, it indicates that the router is faulty. You should eliminate the router fault or replace the New router.
8. If you are an ADSL yearly subscription user, if this problem occurs during use, the phone may be in arrears. Please consult the customer service center. Some users of China Telecom or China Unicom in some regions may be unable to access the Internet when the phone bill is overdue, because in some regions, the telecom department does not stop using the phone, but stops using the network when the user's phone bill is overdue.
9. Some brands of Modem power supply are insufficient and may cause errors 678.
10. If none of the above methods can solve your problem, try the reset of the adsl modem and try again.
11. damage to the adsl modem device may also cause a 678 error. Although it seems that the adsl modem is running normally, the connection fails, and I have encountered such problems, finally, we changed a new adsl modem to solve the problem.