A hotfix is available for Outlook 2007 that enables certain MAPI applications to create new items in a .pst file after the PstDisableGrow registry entry is configured

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: You can configure the PstDisableGrow registry entry to prevent Microsoft Office Outlook 2007 from creating new items in a .pst file. To do this, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry subkey:
   HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST
3. On the Edit menu, point to New, and then click DWORD Value.
4. Type PstDisableGrow, and then press ENTER.
5. Right-click PstDisableGrow, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Exit Registry Editor.

After you complete this procedure, you may want to use MAPI applications to create new items in a .pst file when the PstDisableGrow registry entry is configured. To do this, apply the 953925 hotfix package .

To apply the 953925 hotfix package, follow these steps:

1. Install the 953925 hotfix package. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
   953925  (http://support.microsoft.com/kb/953925/ ) Description of the Outlook 2007 hotfix package: June 11, 2008
2. Implement a PST override handler to bypass the PSTDisableGrow policy. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
   956070  (http://support.microsoft.com/kb/956070/ ) How to implement a PST override handler to bypass the PSTDisableGrow policy in Outlook 2007