'Class Not Registered' Fix

Users running Windows 10 systems could have encountered a rather peculiar error that states 'Class Not Registered.' Usually, this signifies that a DLL file has become unregistered. Dynamic Link Library (DLL) files are a significant and convenient part of almost any program. They contain instructions about how certain operations should be performed. It must be noted that a single DLL file can be used by multiple programs simultaneously, so an error in such a file could affect several different applications. The 'dynamic' part of this type of file indicates that the data inside is invoked only when a program needs it instead of being loaded all the time. Unfortunately, the causes for this particular error are both numerous and quite varied.

One possible solution is for users to check if they have iCloud running. To do so:

  1. Press the CTRL+SHIFT+ESC keys simultaneously. This should open the Task Manager window.
  2. Scroll among the different processes listed under the 'Processes' tab and look for iCloud. If you find it, right-click it and select 'End task.'
  3. Check if the 'Class Not Registered' Error has been resolved.

If the 'Class Not Registered' Error emergence is connected to Internet Explorer, users can try to re-register the ExplorerFrame.dll file. First, however, they will need to have an elevated Command Prompt running. Type 'command prompt' in the Search field, right-click the displayed result and select 'Run as administrator.' Now that we have the appropriate Command Prompt, started to input the regsvr32 ExplorerFrame.dll command in it and press Enter. Next, start Internet Explorer and see if the error has disappeared.

If the error appears when trying to use either the Start Menu, Cortana, or Microsoft Edge, a possible fix could be to try restarting the Explorer process. Open Task Manager by pressing CTRL +SHIFT+ESC together. Scroll through the list of active processes found under the 'Processes' tab and find the one named 'explorer.exe.' Right-click it and select 'End Task.' This should force Explorer to restart and it might fix the 'Class Not Registered' error.

Stop the iCloud Process

This error is commonly associated with Google Chrome, but it can happen to any software program. Another common cause of the “Class Not Registered” error is iCloud. You will have to close iCloud using Task Manager to correct the problem. Task Manager lets you monitor your system and see more information about the processes running on the computer. You can also use Task Manager to terminate programs and processes and change priorities. Open Task Manager by pressing Ctrl+Alt+Delete on your keyboard or by right-clicking on the Start menu and choosing “Task Manager.”

Scroll down through Task Manager to find iCloud and right-click on it. Click on “End Task” to stop it. You can also click on the process and then the “End Task” button.

If you want to stop iCloud automatically starting when you start your computer, you’ll need to disable it or remove it from the Startup list. Click the “startup” tab in Task Manager and find iCloud. Select iCloud and then click the “Disable” button or right-click on it and disable it through the menu.

Re-Register ExplorerFrame.dll

If you encounter the “Class Not Registered” error when using Internet Explorer, resetting the ExplorerFrame.dll file could solve it. You’ll need to use Command Prompt, a text-based interface that lets you run commands in Windows. Most of the commands used in Command Prompt use scripts and batch files to automate tasks, perform more advanced administrative tasks, troubleshoot Windows errors, and solve them. Command Prompt was once the only way to interact with the computer, so developers created simple commands and syntax to perform these tasks.

Command Prompt only recognizes commands when they are entered correctly, but you can choose optional parameters. The program runs the task as commanded. Some commands can only be done with administrator-level privileges. Open the Start menu and search for Command Prompt. Right-click the result and click on “Run as Administrator” to access these advanced commands.

Type the command “regsvr32 ExplorerFrame.dll” into the window and press Enter to run it. Open Internet Explorer when Command Prompt finishes to see if the error persists.

Use Component Services

Start Component Services by holding the Windows key and R button to open the “Run” command. Type “dcomcnfg” into the dialog box and click “OK” to begin.

Double-click the “Component Services” option on the left panel, then “Computers” and “My Computer.” Double-click the “DCOM Config” option, and you’ll get a “DCOM Configuration Warning.” Click on “Yes” to continue and close the Component Services window. Restart the computer to see if the problem is solved or not.

Check the ETW Collector Service in Internet Explorer
If you use Microsoft Edge or Windows Explorer, consider checking the Internet Explorer ETW Collector Service. The service collects ETW events in real-time and processes them. Checking if the service is running could fix the problem and prevent it from happening when using Edge or Internet Explorer.

Check the ETW Collector Service by using the Run command. Type “Services.msc” in the Run command box and hit Enter. Check the Services window, and you’ll see local services. Right-click the “Internet Explorer ETW Collector Service” and then start the service if it is disabled.

Restart Explorer.exe

Resetting Windows Explorer can help if you get the error message when using Microsoft Edge, Cortana, or the Start menu. You’ll need to use Task Manager to restart the Explorer process. Open Task Manager and click on “Details” to open more information. Find the “explorer.exe” process in the list, right-click it, and choose “End Task.”

Your computer should automatically restart Explorer but, if it doesn’t, open a Run command type “explorer.”

Reset Default Apps

If you encounter an error when attempting to open an image file, resetting your default apps could help. Default apps are the programs Windows uses automatically whenever you open a file. Open the Settings on your computer and choose “Apps” to get started.

Open the “Default Apps” panel on the left. Scroll down and click on the “Reset” button to reset your apps back to their factory defaults.

Check the Hard Drive

Sometimes the error happens when there are problems with the hard drive. It would help to check the hard drive with Command Prompt to ensure it is running correctly. You can use the Windows Management Instrumentation Command in Command Prompt for this. The WMIC command line is a scripting interface that makes it easier to use Windows Management Instrumentation. Open Command Prompt to get started.

Enter the command “wmic diskdrive get status” into Command Prompt and hit Enter. You will receive a status alert for each hard drive on your computer. If you get anything other than “OK,” it could indicate problems with your hard drive. You may need to have it repaired or replaced.

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