“Class not registered” Error on Windows 10 [Solved]

April Cai, in Common error Tags: Windows 10


Class not registered error occurs on your Windows 10 due to the app or program with unregistered DLL files. That causes you cannot access those programs. Therefore, to get your work properly on Windows 10, follow the effective fixes below to solve the problem.


☞ 1. Fix DCOM(Distributed Component Object Model) errors
☞ 2. Re-register ExplorerFrame.dll file
☞ 3. Start Internet Explorer ETW Collector Service
☞ 4. Set Windows Photo Viewer as a default image viewer
☞ 5. Disable iCloud


Fix 1. Fix DCOM(Distributed Component Object Model) errors


1)
Open Run dialog box by pressing Windows logo key + R key at the same time.
Then type dcomcnfg in the box and hit Enter to open Component Services.



2)
Head to Component Services Computers My Computer on Component Services window.
Then double-click on DCOM Config.



3)
Then a few DCOM Configuration warning messages will pop up.
Click Yes for each one.



4)
Reboot your Windows 10 to see if the error still pops up.


Fix 2. Re-register ExplorerFrame.dll file




1)
Run Command Prompt as administrator.
How to:
Pressing Windows logo key + X key together, then click Command Prompt(Admin).
Click Yes when prompted by User Account Control.



2)
Type regsvr32 ExplorerFrame.dll in command prompt window and hit Enter to run it.



3)
Check if Class not registered error still exists.


Fix 3. Start Internet Explorer ETW Collector Service


1)
Open Run dialog box by pressing Windows logo key + R key at the same time.
Then type services.msc in the box and hit Enter to open Windows Services.



2)
Scroll down to find Internet Explorer ETW Collector Service.
Then right-click on it and click Start.




3)
Check if Class not registered error still exists.


Fix 4. Set Windows Photo Viewer as a default image viewer



If Class not registered error occur when you open the photo app, try to set Windows Photo Viewer as a default image viewer to fix the error.

1)
Press Windows logo key + key at the same time to open Windows Setting window.
Then click System.



2)
Click Default apps on left pane.
Then on right pane, scroll down to click Reset under Reset to the Microsoft recommended defaults dialog.



3)
Check if Class not registered error still exists.



If you install iCloud on your Windows 10, you can try the fix below if fixes above didn’t serve you.

Fix 5. Disable iCloud

Some users reported that to disable iCloud in Task Manager fix the error for them. Thus make sure to try to disable icloud if you install one on Windows 10.

1)
Press Shift + Ctrl + Esc keys at the same time to open Task Manager.

2)
On Task Manager window, tap on Startup pane.
Then find and right-click on iCloud Services.
Click Disable.



3)
Check if Class not registered error still exists.

That’s it!
Hopefully you have got your Windows 10 out of Class not registered error.


Help Us Improve Article
  • praphull karne

    internet explorar etw collector file is not show .
    so what i do

  • MC2 Miller

    Tried all, Batting Zero!
    This is really amazing that Microsoft Windows 10 Pro could just loose a key component.
    And, that Microsoft has no clue that this is a problem. Seems many people have this issue.

    • Robert Miller

      rebooted and tried again, none of these apply or fix the problem.
      Why can’t Microsoft fix this?
      Worse – my computer reboots every 14 minutes.

  • Jamal Hayden

    none of the shortcuts are working and i cant even get the start menu up!

    • Jamal Hayden

      please help

      • April Cai

        Hi, Jamal Hayden. In such case, you could try to restart your computer and then try the solutions here. Sometimes, restarting can solve some wired computer problems as here you cannot get the start menu up.