How to Repair CSSObserver.js (Free Download)

Last Updated: 11/25/2023
[Reading Time Required: 3.5 minutes]

CSSObserver.js uses the JS file extension, which is more specifically known as a JavaScript file. It is classified as a Script (JavaScript) file, created for Apple iTunes 12.10.1.4 by Apple.

The first version of CSSObserver.js for CopyTrans Drivers Installer 2.048 was seen on 09/25/2018 in Windows 10. The newest file release date for Apple iTunes 12.10.1.4 was 10/07/2019 [version 12.10.1.4].

This article discusses complete file details, JS file troubleshooting instructions for problems with CSSObserver.js, 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: CSSObserver.js
File Extension: JS file extension
File Type: Script
Description: JavaScript
User Popularity Rating:
 
Developer and Software Information
Software Program: Apple iTunes 12.10.1.4
Developer: Apple
Software: Apple iTunes
Software Version: 12.10.1.4
File Details
File Size (Bytes): 2635
Oldest File Date: 11/01/2019
Latest File Date: 11/09/2019


What are CSSObserver.js Error Messages?


General CSSObserver.js Runtime Errors

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

Microsoft Visual C++ Runtime Library

Runtime Error!

Program: C:\Program Files\WindowsApps\AppleInc.iTunes_12101.4.43017.0_x64__nzyj5cx40ttqa\WebKit.resources\WebInspectorUI\Protocol\CSSObserver.js

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


Most JS errors are due to missing or corrupt files. Your CSSObserver.js file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Apple iTunes), or deleted by a malware infection. Furthermore, CSSObserver.js file corruption could be caused from a power outage when loading Apple iTunes, system crash while loading or saving CSSObserver.js, 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 CSSObserver.js 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 CSSObserver.js 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 CSSObserver.js error, please proceed to the Step 2 below.

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

You can uninstall Apple iTunes 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 Apple iTunes 12.10.1.4 and click "Uninstall"
  5. Follow the prompts for uninstallation.

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

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

Apple iTunes 12.10.1.4

Apple

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 CSSObserver.js 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 CSSObserver.js 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 CSSObserver.js 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 CSSObserver.js file version. We maintain a comprehensive database of 100% malware-free CSSObserver.js files for every applicable version of Apple iTunes. 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 CSSObserver.js Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Apple iTunes folder location:
    Windows 10: C:\Program Files\WindowsApps\AppleInc.iTunes_12101.4.43017.0_x64__nzyj5cx40ttqa\WebKit.resources\WebInspectorUI\Protocol\
    Windows 10: C:\Program Files (x86)\Common Files\Apple\Apple Application Support\WebKit.resources\WebInspectorUI\Protocol\
    Windows 10: C:\Program Files\Common Files\Apple\Apple Application Support\WebKit.resources\WebInspectorUI\Protocol\
    Windows 10: C:\Program Files (x86)\Common Files\Apple\Apple Application Support\WebKit.resources\WebInspectorUI\Protocol\
    Windows 10: C:\Program Files\Common Files\Apple\Apple Application Support\WebKit.resources\WebInspectorUI\Protocol\
  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 CSSObserver.js 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 CSSObserver.js Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying CSSObserver.js to your appropriate Windows system directory. Apple typically does not release Apple iTunes JS 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 CSSObserver.js and all other JS files for Apple iTunes. An incorrectly installed JS 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 CSSObserver.js


JS Files Related to CSSObserver.js

File Name Description Software Program (Version) File Size (bytes) File Location
IndexedDatabaseHostTre... JavaScript Apple iTunes 12.10.1.4 1865 C:\Program Files\WindowsApps\Microsoft.ZuneVide...
AuditTreeElement.js JavaScript Apple iTunes 12.10.1.4 11438 C:\Program Files\WindowsApps\Microsoft.DesktopA...
ProbeSetDetailsSection.js JavaScript Apple iTunes 12.10.1.4 7152 C:\Program Files\WindowsApps\Microsoft.VCLibs.1...
CPUTimelineRecord.js JavaScript Apple iTunes 12.10.1.4 4002 C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...
Sidebar.js JavaScript Apple iTunes 12.10.1.4 9959 C:\Program Files\WindowsApps\Microsoft.GetHelp_...

Other Files Related to CSSObserver.js

File Name Description Software Program (Version) File Size (bytes) File Location
CBS.log Log Apple QuickTime Player 7.7.9 10475539 C:\Windows\Logs\CBS\
setupact.log Log Apple Safari 5.1.7 26147 C:\Windows\System32\Sysprep\Panther\
setupact.log Log Apple iTunes 12.10.1.4 24317 C:\Windows\System32\Sysprep\Panther\
SA.DAT Game Data Apple QuickTime Player 7.7.9 6 C:\WINDOWS\Tasks\
WmiApRpl.ini Windows Initialization Apple QuickTime Player 7.7.9 29736 C:\Windows\inf\WmiApRpl\0009\


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