DOCUMENT:Q248781  07-JAN-2000  [exchange]
TITLE   :XADM: Mailbox Manager Installation Err Msg: Insufficient Drive..
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5 SP3
OPER/SYS:
KEYWORDS:exc55sp3

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 SP3 
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SYMPTOMS
========

The installation of Mailbox Manager does not work and you receive the following
error message:

   Insufficient network drive letters available! Please free two drive letters
   and try again.

CAUSE
=====

The Exchsrvr\Add-ins folder is not shared or the necessary permissions have been
removed.

RESOLUTION
==========

Share the Add-ins folder as follows:

1. Locate the Exchsrvr\Add-ins folder in Explorer.

2. Right-click the folder, and click Sharing.

3. In the Add-ins Properties dialog box, click Share As. The folder name appears
   in the Share name field and "Access to EDK objects" (with the quotation
   marks) appears in the Comment field.

4. Click Permissions. In the "Access through share permissions" dialog box,
   verify that the following permissions are set:

   Everyone - Read
   Exchange Service Account name - Full Control
   Administrators - Full Control

5. Click OK.

6. Click Apply, and then click OK.

7. Run Mailbox Manager installation.

Additional query words:

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Keywords          : exc55sp3 
Technology        : kbExchangeSearch kbZNotKeyword2 kbExchange550SP3
Version           : winnt:5.5 SP3
Issue type        : kbprb

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