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Windows DUN/RAS Error Number 645
Windows Vista Solution List
- Check under the Security tab of the connection's properties to make certain the correct Security Options are selected (Typically "Allow unsecured password").
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Try recreating the connection.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows XP Solution List
- Check under the Security tab of the connection's properties to make certain the correct Security Options are selected (Typically "Allow unsecured password").
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Try recreating the connection.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows 2000 Solution List
- Check under the Security tab of the connection's properties to make certain the correct Security Options are selected (Typically "Allow unsecured password").
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Try recreating the connection.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows ME Solution List
- Check the Network Control Panel to make certain there is a Dial-Up Adapter installed. If not, install one as this is the likely cause of this issue.
- Check under the Security tab of the connection's properties to make certain the correct Advanced Security Options are selected (Typically "Require encrypted password" should be unchecked).
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Try reinstalling your PPPoE connection software and/or Dial-Up Networking. Remember to make certain you have all of the necessary software, cab files and/or Windows CD.
- Try recreating the connection.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows 98 Solution List
- Check the Network Control Panel to make certain there is a Dial-Up Adapter installed. If not, install one as this is the likely cause of this issue.
- Check under the Security tab of the connection's properties to make certain the correct Advanced Security Options are selected (Typically "Require encrypted password" should be unchecked).
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Try reinstalling your PPPoE connection software and/or Dial-Up Networking. Remember to make certain you have all of the necessary software, cab files and/or Windows CD.
- Try recreating the connection.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows 95 Solution List
- Check the Network Control Panel to make certain there is a Dial-Up Adapter installed. If not, install one as this is the likely cause of this issue.
- Check under the Security tab of the connection's properties to make certain the correct Advanced Security Options are selected (Typically "Require encrypted password" should be unchecked).
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Try reinstalling your PPPoE connection software and/or Dial-Up Networking. Remember to make certain you have all of the necessary software, cab files and/or Windows CD.
- Try recreating the connection.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Windows NT Solution List
- Check under the Security tab of the connection's properties to make certain the correct Authentication and encryption policy options are selected (Typically "Accept any authentication including clear text" should be checked).
- When connecting, make certain nothing is entered in the "Domain" field if nothing should be entered there.
- Delete the username and password, making certain to press backspace and delete several times to remove any possible spaces that you were unable to see. Verify that you have both the correct username and password. Once you have verified these, retype your username and password, making certain to type them in the correct case.
- Know a solution that is not listed? Please let us know about it by using the information located below.
Submit a Solution
Have a solution that is not listed here? Please let me know about it by e-mailing me at bliedel@modemhelp.net!
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