“Class not registered” Error on Windows 10

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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

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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.

Windows 10

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

Windows 10

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

Windows 10

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.

Windows 10

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

Windows 10

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.

Read Also:  Windows 10 Taskbar Not Hiding

Windows 10

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

Windows 10

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.

Windows 10

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

Windows 10

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.

Windows 10

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.

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