How to fix “Class not registered” error on Windows 10?

by Jake Doe - -


Issue: How to fix “Class not registered” error on Windows 10?

Hi, I have a problem – I often receive “Class not Registered” when trying to search the web by using Cortana. Sometimes the error shows up when I click on links or sometimes I’m not allowed to install software. All I see is a pop-up box saying “Class not Registered” and an ExplorerFrame.dll. Is there anything  that can be done?

Solved Answer

“Class not Registered” is an error that users may receive while trying to use basic Windows functions, such as using the Start button, opening Internet Explorer/Fire Explorer, launching programs, etc. The issue is exceptionally annoying as users are unable to use the operating system normally. Thus, we will provide insights and ways to fix “Class not Registered” error once and for all.

Windows 10 is a great example of an operating system, which successfully combines the rooted and already adopted features, design, functions, apps, etc. with the current innovations. However, the fact that it exhibits numerous bugs is undeniable. Thousands of people are reporting about error pop-ups, BSOD,[1] update failures, driver[2] malfunctions, sound/keyboard/mouse issues, sleep mode bugs, etc. every day. “Class not Registered” is one of the issues that numerous users reported having.

“Class not Registered” error is relatively weird, because it does not provide much information on what exactly is wrong, and neither does it return any error code. Nevertheless, the title of the error pop-up indicates which application or feature is having issues. For example, the most common apps to encounter “Class not Registered” error are File Explorer, Google Chrome, Visual Basic, etc.

Class not registered error fix

Speaking of reasons why the “Class not Registered” error occurs – it is due to a particular .DLL[3] file that is not registered, hence certain functions that a particular application uses cannot be launched, consequently resulting in an error. A DLL file (Dynamic Link Library) is similar to that of an .EXE (executable) file, as it incorporates a special set of commands that are used to perform certain operations. Multiple apps can use a same .dll file; thus, the issue might become widespread (depending on the affected .DLL).

Due to the core functionality of the Windows operating system, there is almost never one universal way to fix things. In other words, in order to fix  “Class not Registered” error, some troubleshooting should be done, as each of Windows systems is different – they can run on different versions and have different configuration settings.

Before you proceed with applying the following “Class not Registered” error fixes described below, we would like to offer you a PC repair tool Reimage – it can repair Windows-related issues within a few minutes.

Method 1. Restart Windows Explorer

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As we have already mentioned, “Class not registered” error often shows up when using Cortana, Start Menu, or web browsers (Edge, Chrome). In this case, it’s advisable to restart Windows Explorer by performing these steps:

  • Click Ctrl + Shift + ESC to open Task Manager.
  • Select Details.
  • Find Windows Explorer and right-click it.
  • Select Restart.Restart Windows Explorer
  • You will see a short flash and Windows Explorer will be restarted.

Note: Multiple users reported that iCloud was the culprit of the error, and disabling it via Startup menu helped to fix the issue. To disable if, proceed with the following steps:

  • Open Task Manager one again.
  • Go to Startup.
  • Right-click on iCloud and select Disable.Disable iCloud

Method 2. Set Windows Photo Viewer as a default image viewer

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If the “Class not registered” error shows up with a .jpg file extension, you should switch a default image viewer to Windows Photo Viewer.

  • Click on any picture stored on your PC and right-click on it.
  • When the drop-down menu shows up, select Open with.
  • Click Choose another app and select Windows Photo Viewer.
  • To ensure that Windows Photo Viewer will be opened by default, click Always use this app to open .jpg files and click OK.

Method 3. Reset default apps

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This is another method that should help help you fix “Class not registered” error when it occurs when trying to open pictures:

  • Type in Default apps into Windows Search and hit Enter.
  • Locate Reset to the Microsoft recommended defaults section and click Reset.Reset default apps

Method 4. Set Edge or IE as a default web browser

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In case the problem occurs when you attempt to use a web browser, it’s advisable to set Microsoft Edge as a default web browser. This can be done by following these simple steps:

  • Type in Default apps into Windows search and press Enter.
  • Scroll down to locate Web browser.
  • Click on it, and pick MS Edge/Internet Explorer.Choose MS Edge as a default browser

Method 5. Re-register ExplorerFrame.dll file

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If “Class not Registered” error occurred when trying to use Internet Explorer, it might be useful to re-register the .dll file relating to it. Here's how to do it:

  • Type in cmd into Windows search.
  • Right-click on Command Prompt result and select Run as administrator.
  • When User Account Control shows up, click Yes.Re-register ExplorerFrame.dll file
  • In Command Prompt window, type in the following command and press Enter:

    regsvr32 ExplorerFrame.dll

Method 6. Make use of Component Services

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  • Type in Component Services into Windows search and hit Enter.
  • Expand the following: Component Services > Computers > My Computer.
  • Double-click on DCOM Config entry.
  • Once you get the DCOM Configuration Warning, press Yes.Use Component Services
  • Reboot your PC.

Method 7. Restart Internet Explorer ETW Collector Service

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  • Type in Services into Windows search and press Enter.
  • Scroll down and find Internet Explorer ETW Collector Service.
  • Right-click and select Restart.Restart Internet Explorer ETW Collector Service

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Therefore, to stay completely anonymous and prevent the ISP and the government from spying on you, you should employ Private Internet Access VPN. It will allow you to connect to the internet while being completely anonymous, prevent trackers, ads, as well as malicious content. Most importantly, you will prevent the illegal surveillance activities that NSA and other governmental institutions are performing behind your back.


Recover your lost files quickly

Unforeseen circumstances can happen at any time while using the computer: it can turn off due to a power cut, a Blue Screen of Death (BSoD) can occur, or random Windows updates can decide to reboot the machine when you went away for a few minutes. As a result, your schoolwork, important documents, and other data might be lost.

Additionally, you might also be attacked by malware that can corrupt your Windows or encrypt files with a robust encryption algorithm, and ask for a ransom in Bitcoin for the decryption tool. Cybercriminals might not deliver what they promised, however, so it is better to attempt alternative file recovery methods that could help you to retrieve at least some portion of the lost data.

Data recovery software is one of the options that could help you recover your files. Once you delete a file, it does not vanish into thin air – it remains on your system as long as no new data is written on top of it. Data Recovery Pro is recovery software that searchers for working copies of deleted files within your hard drive. By using the tool, you can prevent loss of valuable documents, school work, personal pictures, and other crucial files.

About the author
Jake Doe
Jake Doe - Computer technology geek

Jake Doe is a News Editor at Ugetfix. Since he met Ugnius Kiguolis in 2003, they both launched several projects that spread awareness about cybercrimes, malware, and other computer-related problems.

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