Fixing MainData.dat Issues - How to Download and Repair

Last Updated: 12/06/2023
[Time to Read: ~3-5 minutes]

Game Data files, such as mainData.dat, are considered a type of Dynamic Link Library (Game Data) file. They are associated with the DAT file extension, developed by IObit for Advanced SystemCare Pro 12.2.0.314.

mainData.dat was initially released with Advanced SystemCare Free 12.6.0.368 on 09/12/2019 for the Windows 10 Operating System. The newest file release date for Advanced SystemCare Pro 12.2.0.314 was 03/01/2019 [version 12.2.0.314].

This article discusses complete file details, DAT file troubleshooting instructions for problems with mainData.dat, 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: mainData.dat
File Extension: DAT file extension
File Type: Dynamic Link Library
Description: Game Data
User Popularity Rating:
 
Developer and Software Information
Software Program: Advanced SystemCare Pro 12.2.0.314
Developer: IObit
Software: Advanced SystemCare Pro
Software Version: 12.2.0.314
File Details
File Size (Bytes): 4280
Oldest File Date: 10/02/2019
Latest File Date: 11/27/2019


What are mainData.dat Error Messages?


Dynamic Link Library mainData.dat Errors

mainData.dat is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like mainData.dat, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like Setup.exe - to follow. These files were created so that multiple programs (eg. Advanced SystemCare Pro) could share the same mainData.dat 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 DAT 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 mainData.dat is attempted to be loaded either when Advanced SystemCare Pro is starting up, or in some cases already running. Some of the most common mainData.dat errors include:

Your mainData.dat file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Advanced SystemCare Pro), or deleted by a malware infection. Furthermore, mainData.dat file corruption could be caused from a power outage when loading Advanced SystemCare Pro, system crash while loading mainData.dat, 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.



How to Fix mainData.dat 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 mainData.dat 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 mainData.dat error, please proceed to the Step 2 below.

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

You can uninstall Advanced SystemCare Pro 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 Advanced SystemCare Pro 12.2.0.314 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Advanced SystemCare Pro software.

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

Advanced SystemCare Pro 12.2.0.314

IObit

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 mainData.dat 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 mainData.dat 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 mainData.dat 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 mainData.dat file version. We maintain a comprehensive database of 100% malware-free mainData.dat files for every applicable version of Advanced SystemCare Pro. 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 mainData.dat Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Advanced SystemCare Pro folder location:
    Windows 10: C:\ProgramData\IObit\Advanced SystemCare\Startup Manager\
    Windows 10: C:\ProgramData\IObit\Advanced SystemCare\Startup Manager\
    Windows 10: C:\ProgramData\IObit\Advanced SystemCare\Startup Manager\
  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 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve mainData.dat 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 mainData.dat Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying mainData.dat to your appropriate Windows system directory. IObit typically does not release Advanced SystemCare Pro DAT 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 mainData.dat and all other DAT files for Advanced SystemCare Pro. An incorrectly installed DAT file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10


Files Related to mainData.dat


DAT Files Related to mainData.dat

File Name Description Software Program (Version) File Size (bytes) File Location
ntuser.dat Game Data Advanced SystemCare Pro 12.2.0.314 1310720 C:\Windows\inf\
mainData.dat Game Data Advanced SystemCare Pro 12.2.0.314 4280 C:\Program Files\TeraCopy\
Register.dat Register Advanced SystemCare (12.0) 2252048 C:\Users\Tester\AppData\Local\Temp\RarSFX0\
settings.dat Game Data Advanced SystemCare Pro 12.2.0.314 8192 C:\Windows\System32\
Roboto_Light.dat Game Data Advanced SystemCare Pro 12.2.0.314 162636 C:\Program Files (x86)\OpenOffice 4\

Other Files Related to mainData.dat

File Name Description Software Program (Version) File Size (bytes) File Location
Sessions.xml Extensible Markup Language Driver Booster 7.0.2.435 5277233 C:\Windows\servicing\Sessions\
Sessions.back.xml Extensible Markup Language Driver Booster 7.0.2.435 5277233 C:\Windows\servicing\Sessions\
CBS.log Log Advanced SystemCare Ultimate 12.1.0.120 890557 C:\Windows\Logs\CBS\
system.ini Windows Initialization Advanced SystemCare Ultimate 12.1.0.120 58 C:\Program Files (x86)\IObit\Advanced SystemCar...
system.ini Windows Initialization Advanced SystemCare Free 12.6.0.368 58 C:\Program Files (x86)\IObit\Advanced SystemCare\


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