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Windows DUN/RAS Error Number 691


Windows Vista: "Access denied because username and/or password is invalid on the domain."
Windows XP: "Access denied because username and/or password is invalid on the domain."
Windows 2000: "Access denied because username and/or password is invalid on the domain."
Windows ME: "Access denied because username and/or password is invalid on the domain."
Windows 98: "Access denied because username and/or password is invalid on the domain."
Windows 95: "Access denied because username and/or password is invalid on the domain."
Windows NT: "Access denied because username and/or password is invalid on the domain."

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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.
  • 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.
  • 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.
  • Know a solution that is not listed? Please let us know about it by using the information located below.


Windows ME Solution List


  • 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.
  • This may be due to password control file corruption. Go to Start > Run > type msconfig and press enter. Under the Startup tab uncheck both PCHealth and Statemgr, then rstart the computer. Once the computer is back up, go to Start > Run > type msconfig and press enter. Choose SFC and extract the following files: RASAPI32.DLL , PPPMAC.VXD , RNAUI.DLL , MSVCRT20.DLL one at a time to their default locations. Click back on the Startup tab and recheck both PCHealth and Statemgr. Restart the computer and try the connection again.
  • Know a solution that is not listed? Please let us know about it by using the information located below.


Windows 98 Solution List


  • 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.
  • This may be due to password control file corruption. Go to Start > Run > type msconfig and press enter. Choose SFC and extract the following files: RASAPI32.DLL , PPPMAC.VXD , RNAUI.DLL , MSVCRT20.DLL one at a time to their default locations. Restart the computer and try the connection again.
  • Know a solution that is not listed? Please let us know about it by using the information located below.


Windows 95 Solution List


  • 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.
  • This may be due to password control file corruption. Make certain you have your Windows CD or CAB files. Make certain you also have the Dial-Up Networking 1.3 or 1.4 Upgrade when doing this so that you can reinstall this upgrade as well. Make certain you have any PPPoE software that is required as you will be reinstalling this as well. Start by removing any dialup/dsl connections, then remove any PPPoE software and Dial-Up Networking Upgrades from the Add/Remove Programs Control Panel. Remove all entries from the Network Control Panel. Uncheck "Communications" under "Windows Setup" in the Add/Remove Programs Control Panel and once Windows is finished removing this restart your computer. Reinstall your Communications components then restart your computer. Install your Dial-Up Networking Upgrade, make certain that your Network Control Panel is setup properly and install any removed PPPoE software, then restart your computer. Setup any connections and try again.
  • 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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