Troubleshooting FontCache-Obsolete-578.dat: How To Guide (Free Download)

Last Updated: 12/12/2023
[Reading Time Required: 3.5 minutes]

Game Data files such as FontCache-Obsolete-578.dat utilize the DAT file extension. This file is considered a Dynamic Link Library (Game Data) file, and was first created by Microsoft for the Flight Simulator X demo Demo software package.

The first version of FontCache-Obsolete-578.dat was released for the Windows 10 Operating System on 08/10/2006 inside Flight Simulator X demo Demo. This file release marks the latest and most updated version from Microsoft.

In this short article, you will discover detailed file information, steps for troubleshooting DAT file problems with FontCache-Obsolete-578.dat, and list of free downloads for every version that exists in our comprehensive file directory.

File Analysis Provided by Jason Geater (Author)


Recommended Download: Fix FontCache-Obsolete-578.dat / Flight Simulator X demo-related registry issues with WinThruster.

Compatible with Windows 11, 10, 8, 7, Vista, XP and 2000

Average User Rating

 

Optional Offer for WinThruster by Solvusoft
| EULA | Privacy Policy | Terms | Uninstall


File Overview


General Information
File Name: FontCache-Obsolete-578.dat
File Extension: DAT file extension
File Type: Dynamic Link Library
Description: Game Data
User Popularity Rating:
 
Developer and Software Information
Software Program: Flight Simulator X demo Demo
Developer: Microsoft
Software: Flight Simulator X demo
Software Version: Demo
File Details
File Size (Bytes): 334156
Oldest File Date: 11/16/2019
Latest File Date: 11/16/2019


What are FontCache-Obsolete-578.dat Error Messages?


Dynamic Link Library FontCache-Obsolete-578.dat Errors

FontCache-Obsolete-578.dat is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like FontCache-Obsolete-578.dat, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like MpSigStub.exe - to follow. These files were created so that multiple programs (eg. Flight Simulator X demo) could share the same FontCache-Obsolete-578.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 FontCache-Obsolete-578.dat is attempted to be loaded either when Flight Simulator X demo is starting up, or in some cases already running. Some of the most common FontCache-Obsolete-578.dat errors include:

Your FontCache-Obsolete-578.dat file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Flight Simulator X demo), or deleted by a malware infection. Furthermore, FontCache-Obsolete-578.dat file corruption could be caused from a power outage when loading Flight Simulator X demo, system crash while loading FontCache-Obsolete-578.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 FontCache-Obsolete-578.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 FontCache-Obsolete-578.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 FontCache-Obsolete-578.dat error, please proceed to the Step 2 below.

Step 2: If recently installed Flight Simulator X demo (or related software), uninstall then try reinstalling Flight Simulator X demo software.

You can uninstall Flight Simulator X demo 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 Flight Simulator X demo Demo and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Flight Simulator X demo software.

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

Flight Simulator X demo Demo

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 FontCache-Obsolete-578.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 FontCache-Obsolete-578.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 FontCache-Obsolete-578.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 FontCache-Obsolete-578.dat file version. We maintain a comprehensive database of 100% malware-free FontCache-Obsolete-578.dat files for every applicable version of Flight Simulator X demo. 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 FontCache-Obsolete-578.dat Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Flight Simulator X demo folder location:
    Windows 10: C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\
  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 FontCache-Obsolete-578.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 FontCache-Obsolete-578.dat Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying FontCache-Obsolete-578.dat to your appropriate Windows system directory. Microsoft typically does not release Flight Simulator X demo 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 FontCache-Obsolete-578.dat and all other DAT files for Flight Simulator X demo. 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 FontCache-Obsolete-578.dat


DAT Files Related to FontCache-Obsolete-578.dat

File Name Description Software Program (Version) File Size (bytes) File Location
settings.dat Game Data Flight Simulator X demo Demo 8192 C:\Windows\System32\
FontCache-FontFace.dat Game Data Flight Simulator X demo Demo 16777216 C:\Windows\System32\WDI\{86432a0b-3c7d-4ddf-a89...
FontCache-System.dat Game Data Flight Simulator X demo Demo 339720 C:\Windows\System32\Sysprep\Panther\
stars.dat Game Data Flight Simulator X demo Demo 928836 C:\Program Files\WindowsApps\Deleted\Microsoft....
settings.dat Game Data Flight Simulator X demo Demo 8192 C:\Windows\System32\

Other Files Related to FontCache-Obsolete-578.dat

File Name Description Software Program (Version) File Size (bytes) File Location
WWAN_profile_v1.xsd XML Schema Definition Windows 7 6201 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 7 15591 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 8 15591 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows Vista 15591 C:\Windows\L2Schemas\
WLAN_profile_v1.xsd XML Schema Definition Windows 10 18585 C:\Windows\L2Schemas\


RocketPC

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall


Browse Other File Extensions in Alphabetical Order :   # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

You are downloading trial software. The purchase of a one-year software subscription at the price of $29.97 USD is required to unlock all software features. Subscription auto-renews at the end of the term (Learn more). By clicking the "Start Download" button above and installing "Software", I acknowledge I have read and agree to the Solvusoft End User License Agreement and Privacy Policy.