Microsoft KB Archive/169775

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XFOR: Preserving Personal Address Books (PAB) during Upgrade or Re-installation

Article ID: 169775

Article Last Modified on 10/28/2006


  • Microsoft Exchange Linkage Connector to IBM PROFS and OfficeVision 3.2
  • LinkAge Message Exchange 3.2

This article was previously published under Q169775


LinkAge Connectors use the MAPI Personal Address Book service for storing any required temporary proxy addresses. These are stored under


or wherever the root is.

When you upgrade or re-install, it is important that these .pab files do not get deleted if you do not want to lose any previously generated temporary proxy addresses. You should also back these files up from time to time.

A Personal Address Book (PAB) is created for each of the Linkage connectors. This is because, in theory, certain addresses such as X.400 addresses for a Sender or Passive Recipient, can exceed the capacity of cc:Mail and Notes to directly represent them and therefore may require a map through the Exchange PAB. However, in practice, this seldom happens.

Keywords: kbinfo kbusage KB169775