Fix, Download, and Update OPA11.BAK

Last Updated: 11/26/2023
[Time Required for Reading: 3.5 minutes]

OPA11.BAK is considered a type of General Backup file. It is most-commonly used in Office 2003 developed by Microsoft. It uses the BAK file extension and is considered a Backup (General Backup) file.

OPA11.BAK was initially released with Office 2003 on 08/19/2003 for the Windows XP Operating System. This file version is latest update offered from Microsoft, according to our records.

This article discusses complete file details, BAK file troubleshooting instructions for problems with OPA11.BAK, 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: OPA11.BAK
File Extension: BAK file extension
File Type: Backup
Description: General Backup
User Popularity Rating:
 
Developer and Software Information
Software Program: Office 2003
Developer: Microsoft
Software: Office
Software Version: 2003
File Details
File Size (Bytes): 8200
Oldest File Date: 05/10/2017
Latest File Date: 05/10/2017


What are OPA11.BAK Error Messages?


General OPA11.BAK Runtime Errors

OPA11.BAK file errors often occur during the startup phase of Office, but can also occur while the program is running. These types BAK errors are also known as “runtime errors” because they occur while Office is running. Here are some of the most common OPA11.BAK runtime errors:

Microsoft Visual C++ Runtime Library

Runtime Error!

Program: C:\Documents and Settings\All Users\Application Data\Microsoft\OFFICE\DATA\OPA11.BAK

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.


Most BAK errors are due to missing or corrupt files. Your OPA11.BAK 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, OPA11.BAK file corruption could be caused from a power outage when loading Office, system crash while loading or saving OPA11.BAK, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.



How to Fix OPA11.BAK 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 OPA11.BAK 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 OPA11.BAK 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 2003 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 2003

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 OPA11.BAK 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 OPA11.BAK error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your OPA11.BAK 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 OPA11.BAK file version. We maintain a comprehensive database of 100% malware-free OPA11.BAK 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 OPA11.BAK 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 XP: C:\Documents and Settings\All Users\Application Data\Microsoft\OFFICE\DATA\
  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 XP.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve OPA11.BAK 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.



Download OPA11.BAK Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying OPA11.BAK to your appropriate Windows system directory. Microsoft typically does not release Office BAK 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 OPA11.BAK and all other BAK files for Office. An incorrectly installed BAK file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows XP


Files Related to OPA11.BAK


BAK Files Related to OPA11.BAK

File Name Description Software Program (Version) File Size (bytes) File Location
OPA11.BAK General Backup Office 2003 8200 C:\Windows\System32\
OPA12.BAK General Backup Office 2007 8200 C:\Users\Tester\AppData\Local\Microsoft\Windows...
appsFolder.itemdata-ms... General Backup Office 2016 25350 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
appsFolder.itemdata-ms... General Backup Office 2013 25350 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
DATA.BAK General Backup Office XP 1106 C:\Users\Tester\AppData\Local\Microsoft\Windows...

Other Files Related to OPA11.BAK

File Name Description Software Program (Version) File Size (bytes) File Location
OneX_v1.xsd XML Schema Definition Windows 10 5957 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows Vista 15591 C:\Windows\L2Schemas\
WLAN_policy_v1.xsd XML Schema Definition Windows 8.1 7627 C:\Windows\L2Schemas\
LAN_profile_v1.xsd XML Schema Definition Windows 7 2241 C:\Windows\L2Schemas\
LAN_profile_v1.xsd XML Schema Definition Windows 8.1 2241 C:\Windows\L2Schemas\


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