If you are unable to initialise modem , try using AT&F1 or ATZ as your initialising strings.AT&F1 usually returns a modem to factory settings,ATZ reset your modem to default settings.

If you are not getting dial tones from modem, check that your modem speaker is turned up enough so that you can hear dial tones, busy signals and handshakes. If this does't work then check modem properties in Windows, Control Panel>Modems>Properties here you can check Speaker Volume and adjust according to your choice.

Sometimes the buffer is not sufficient to hold your characters. Default size is to store 128 characters but you can expand it, by editing system.ini file. Open system.ini file using any file editor like notepad, in section [386enh] you can create a buffer of any size. Here each line resembles this: COM x Buffer ,replace x with a number from 1 to 4 to indicate the desired Com port, and substitute num from 128 to 10,000 to set the buffer size.Create a buffer for 2KB (2048), 4Kb (4096), …according to your need. Restart Windows for the change to take effect.

It may look like this:
[386Enh]
COM1Buffer=2048

Double click on Dial-Up Networking, select Properties, and click on the Configure button. Select Option tab,deselect Display Modem Status and click ok. You have to make changes for all connections.

To dial fast from modem double-click on the Modems in the Control Panel. Select Properties. Open the Connection tab and click on Advanced settings. Here enter s11=xx in the Extrasetting field. xx are milliseconds is the speed at which modem will dial. The lower the value, the faster the speed. This setting depends from modem to modem, so be careful while entering the value.

If you regularly work on shared PC's drives, then you must map your drives. Right-click on My Computer > Map the drive, select the n/w drive and assign a drive letter for your convinence.

Use WinIPCfg tool to find your IP address. By this you also know network card's MAC address, which is useful to know IP address conflict in a network. If you know IP addresses you can directly connect to internet.

When you are asked for login, click on cancel button. Once inside search for file *.pwl, pwl stands for password list. Here you should find that file with your login name, ie if login name is xyz than the file name will be xyz.pwl. Delete this file. Now when you login again it will again ask password. At this moment press OK and change password through Control Panel > Users and Passwords. This works only on Windows 9x.

If you are using network then reinstall networking drivers, and if you are not using them then uninstall all network components.

The only solution is to download again your file. Use download managers for better downloading.

You can adjust the number of Re-Dial in Dial Up Network, select Dial Up Network > Connection > Settings here you can select the number of times to redial the number.

To make a network share hidden, simply add a dollar sign $ on the end of share name. Only users who know the exact share name can access it.

This error appears if the application Rnapp.exe happens to be in memory. Press Ctrl + Alt + Del and end this application.

To resolve ipaddress to hostname, run command ping -a ipaddress from command prompt. This will ping the ipaddress as well as display hostname depending on network.

To get complete error message from error code for networking, run net helpmsg errorcode from command prompt. Eg: net helpmsg 5, this will display Access is denied, which is error message for code 5.

To renew the IP configuration, first release the ip and then renew DHCP configuration. From command prompt, run ipconfig /release followed by ipconfig /renew. It will send a DHCPRELEASE message to the DHCP server and renew a new IP.

Flush and resets the contents of the DNS client resolver cache by executing command ipconfig /flushdns from command prompt.

To check full IP configuration, run command ipconfig /all from command prompt. This will display the IP configuraion of all network cards connected in your system all with information of physical address, DHCP Enabled, DHCP Servers and DNS.

To check the IP configuration, run command ipconfig from command prompt. This will display the IP configuraion of all network cards connected in your system.