When you use Microsoft Access, you receive the following error message: This article describes some common causes for this error message and offers methods that you can use to resolve the issue.

This behavior can occur if any of the following conditions are true:

• Data Access Objects (DAO) is not properly registered.
  
  -or-
• One or more references are missing.
  
  -or-
• There is a utility database reference that is not valid.
  
  -or-
• You do not have the required permissions for required libraries.
  
  -or-
• There is a damaged wizard file.
  
  -or-
• The Office compatibility script is not run after you install access on the terminal server.

Cause 1: DAO Is Not Properly Registered

Resolution

1. On the computer that hosts Microsoft Windows Terminal Server or the computer on which Microsoft Access is installed, click Start, and then click Run.
2. Type regsvr32 followed by the path to your DAO file. Enclose this path in quotation marks. For example, to register the DAO 3.5 library, use the following command:
   regsvr32 "C:\Program Files\Common Files\Microsoft Shared\DAO\DAO350.DLL"

Cause 2: One or More References Are Missing

Resolution

1. Open the database for which you receive the error message.
2. Click the Modules tab, and then click New.
3. On the Tools menu, click References.
4. Examine the list of libraries. If any items are marked as "MISSING," locate the library file and re-associate the reference. Or, click to clear the check box next to the library name.

Cause 3: There Is a Utility Database Reference That Is Not Valid

Resolution

1. Open the database for which you receive the error message.
2. Click the Modules tab, and then click New.
3. On the Tools menu, click References.
4. Click to clear the check box next to any reference to Utility Database or Utility.mda.

Cause 4: You Do Not Have the Required Permissions for Required Libraries

Resolution

• Make sure that users have "read" permissions for all files in the following folders:

     Operating System         Location
     --------------------------------------
     Windows NT, 2000, XP     \Winnt\System32
     Windows 95, 98, Me       \Windows\System
  					

• If you cannot grant read permissions, you can use a utility such as FileMon to determine which file or files the users do not have the required permissions to use. To obtain FileMon, visit to the following Sysinternals Web site:
  Sysinternals (http://www.microsoft.com/technet/sysinternals/default.mspx)

Cause 5: There Is a Damaged Wizard File

Resolution

1. Use Windows Explorer to locate the following wizard files: Wzmain80.mde, Wztool80.mde and Wzlib80.mde.
2. Change the file name extension of each file to "old." For example, change Wzmain80.mde to Wzmain80.old.
3. Reinstall Access to restore these files.

Cause 6: Office Compatibility Script Is Not Run After You Install Access on the Terminal Server

Resolution

Locate the office compatibility script in the Scripts folder, and then run it.

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