DUNS ERROR 621, 622, 623, 624, 625

621 - Cannot open the phone book file.
622 - Cannot load the phone book file.
623 - Cannot find the phone book entry.
624 - Cannot write the phone book file.
625 - Invalid information found in the phone book.

Windows NT, 2k, XP: Dial-up networking uses the phonebook file: rasphone.pbk which should be in the Windows\system32\RAS folder. Make sure the file is in this folder. (Use FIND files). If the file is missing, remove and re-install networking components including dial-up networking.

This error should not occur with Windows 9x/Me.

Additional feedback:

I've just installed BT broadband and have XP (SP 1) and tried re-install networking components. This didn't work and it didn't put the rasphone.pbk into the folder.

However it did put me on the right trail. I manually copied rasphone.pbk from C:\Documents and Settings\All Users\Application Data\Microsoft\Network\Connections\
into
Windows\system32\RAS folder

and behold, it worked!

Also see: MS KB 825826

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