If you want to open an app or program on your Windows 10, but if fails, and you’re seeing this error saying: Class not registered. Reset assured, you’re not alone. Many Windows users encounter this error. More importantly, you can fix it easily by yourself. This error occurs on your Windows 10 mainly due to the app or the program with unregistered DLL files. You can probably fix it by these following solutions: Try one at a time:
- Fix DCOM(Distributed Component Object Model) errors
- Re-register ExplorerFrame.dll file
- Start Internet Explorer ETW Collector Service
- Set Windows Photo Viewer as a default image viewer
- Disable iCloud
2) Type dcomcnfg and press Enter to open Component Services.
2) Go to Component Services > Computers > My Computer on the 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 and open the app again to see if it goes fine.
1) Press the 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 the command prompt window and press Enter to run it.
3) Open the app again to see if it goes fine.
1) On your keyboard, press the Windows logo key + R key at the same time to invoke the run command. 2) Type services.msc in the box and press Enter to open Windows Services.
3) Find and right-click on Internet Explorer ETW Collector Service. Then click Start. 4) Open the app again to see if it goes fine.
2) Click System.
3) Click Default apps on the left pane. Then on the right pane, scroll down to click Reset under the Reset to the Microsoft recommended defaults section.
4) Open the app again to see if it goes fine.