Microsoft Office DLL DAO.DLL

Fixing DLL Errors: DAO.DLL Download and Repair

Last Updated: 11/28/2023
[Average Article Time to Read: 4.7 minutes]

Primary Interop Assembly files such as DAO.DLL utilize the DLL file extension. This file is considered a Win32 DLL (Executable application) file, and was first created by Microsoft for the Microsoft Office XP software package.

The first release in the Windows Vista Operating System for DAO.DLL was on 01/30/2007 inside Office 2007. This file marks the latest update from Microsoft, according to our records.

This article discusses complete file details, DLL file troubleshooting instructions for problems with DAO.DLL, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information ✻
File Name: DAO.DLL
File Extension: DLL file extension
Description: Primary Interop Assembly
Object File Type: Executable application
File Operating System: Win32
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Microsoft Corporation
Software Program: Microsoft Office XP
Legal Copyright: Copyright© Microsoft Corporation 2002.  All rights reserved.
File Details
Character Set: Windows, Latin1
Language Code: Neutral
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0xeeee
Code Size: 53248
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What are DAO.DLL Error Messages?


Dynamic Link Library DAO.DLL Errors

DAO.DLL is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like DAO.DLL, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like wisptis.exe - to follow. These files were created so that multiple programs (eg. Office) could share the same DAO.DLL file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when DAO.DLL is attempted to be loaded either when Office is starting up, or in some cases already running. Some of the most common DAO.DLL errors include:

Your DAO.DLL file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Office), or deleted by a malware infection. Furthermore, DAO.DLL file corruption could be caused from a power outage when loading Office, system crash while loading DAO.DLL, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix DAO.DLL Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your DAO.DLL issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the DAO.DLL error, please proceed to the Step 2 below.

Step 2: If recently installed Office (or related software), uninstall then try reinstalling Office software.

You can uninstall Office software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for Office 2007 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Office software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Office 2007

Microsoft Corporation

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many DAO.DLL error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the DAO.DLL error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your DAO.DLL File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate DAO.DLL file version. We maintain a comprehensive database of 100% malware-free DAO.DLL files for every applicable version of Office. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download DAO.DLL Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Office folder location:
    Windows Vista: C:\Windows\assembly\GAC\dao\10.0.4504.0__31bf3856ad364e35\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows Vista.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve DAO.DLL problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download DAO.DLL Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying DAO.DLL to your appropriate Windows system directory. Microsoft typically does not release Office DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing DAO.DLL and all other DLL files for Office. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows Vista
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Files Related to DAO.DLL


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RECALL.DLL Outlook Message Recall Microsoft Outlook (15.0.4561.1000) 43184 C:\Program Files\ESET\ESET Security\
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File Name Description Software Program (Version) File Size (bytes) File Location
OneX_v1.xsd XML Schema Definition Windows 7 5957 C:\Windows\L2Schemas\
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WLANAP_profile_v1.xsd XML Schema Definition Windows 8.1 7548 C:\Windows\L2Schemas\
WLAN_policy_v1.xsd XML Schema Definition Windows Vista 6446 C:\Windows\L2Schemas\
LAN_profile_v1.xsd XML Schema Definition Windows 8.1 2241 C:\Windows\L2Schemas\


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