Microsoft KB Archive/175406

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Knowledge Base

Article ID: 175406

Article Last Modified on 10/27/2000


  • Microsoft Outlook 97 Standard Edition

This article was previously published under Q175406


In Microsoft Outlook version 8.03, a new feature, "Allow upgrade to large tables," is available for Personal Folder (.pst) files. This feature increases the limit on the number of folders per file and the number of messages per folder in a .pst file. The limit has been increased from 16 KB folders per file and messages per folder to approximately 64 KB.


Making this Personal Folders option available causes the headers of the .pst file to be permanently updated. Once this feature has been made available for a specific file, the option will be unavailable in the dialog box.

NOTE: Earlier versions of Microsoft Exchange and Outlook may be able to access a .pst file that has been updated to support the large table format. However, this is not supported and may cause instability and corruption in the .pst file.

Allow Upgrade to Large Tables

To make this feature available in Outlook, follow these steps:

  1. On the Tools menu, click Services.
  2. On the Services tab click to select the Personal Folders service and click Properties.
  3. On the General tab click to select "Allow upgrade to large tables."
  4. Click OK.

NOTE: While attempting to archive to a full .pst file, you may receive the following message:

Error while archiving folder inbox in store <mailboxname> some items could not be moved, because they have already been moved or deleted

Enable large table support and the archiving process will continue.

Additional query words: 16383 16,383 16384 65535 65,535 65536 thousand maximum 8.04

Keywords: kbinfo kbfix KB175406