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Windows DUN/RAS Error Number 621


Windows Vista: "Cannot open the phone book file."
Windows XP: "Cannot open the phone book file."
Windows 2000: "Cannot open the phone book file."
Windows ME: "Cannot open the phone book file."
Windows 98: "Cannot open the phone book file."
Windows 95: "Cannot open the phone book file."
Windows NT: "Cannot open the phone book file."

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Windows Vista Solution List


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


Windows XP Solution List


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


Windows 2000 Solution List


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


Windows ME Solution List


  • Try recreating the dialup connection and if this does not work reinstall Dial-Up Networking.
  • Know a solution that is not listed? Please let us know about it by using the information located below.


Windows 98 Solution List


  • Try recreating the dialup connection and if this does not work reinstall Dial-Up Networking.
  • Know a solution that is not listed? Please let us know about it by using the information located below.


Windows 95 Solution List


  • Try recreating the dialup connection and if this does not work reinstall Dial-Up Networking.
  • Know a solution that is not listed? Please let us know about it by using the information located below.


Windows NT Solution List


  • Are you using WinPoET? If so, go into your RAS settings and configure the PoET Adapters to "Dail Out Only".
  • 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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