How do I delete someone from my address book and all contacts?

The last address book operation did not succeed do to a server error, code:-40402, can't delete contacts, why?

• I right click on name, click on delete, it asks if I am sure, I click yes, a window pops up saying, "the last address book operation did not suceed do to a server error.(Error Code:-40402). Can not delete contacts from yahoo messenger! WHY???

• Answer:

  Try uninstalling Yahoo Messenger then downloading it again. You won't lose any of your contacts, I assure you: Click on: Start Click on: Control Panel Click on: Add/Remove Programs Click on: Yahoo Messenger then remove Download Messenger from one of the following links: For Mac: http://messenger.yahoo.com/mac.php For Windows Vista: http://messenger.yahoo.com/download.php The new version of Yahoo Messenger just released (9.0 Beta): http://beta.messenger.yahoo.com You may have too many programs running in the background draining your system's resources. Tuneup Utilities 2007 is an excellent program which has a Start-up Manager Tool which you can use to disable unnecessary programs from automatically starting up when you boot or restart your computer: http://www.download.com/3000-2094_4-10698444.html