Windows Update error code C80003F3 usually occurs when trying to install a Windows update or by starting WU software programs. This issue can be caused by corrupt Windows Update files or by unsubscribing from all DLL updates. With this error code, you can see the following error message:
Error (s) found: The Windows Update C80003F3 code encountered an unknown error.
In this guide, we have explained all the possible methods that can help you solve this problem. So let’s see the way.
Windows Update error code C80003F3
To fix Windows Update error code C80003F3 on your Windows system, follow these suggestions:
- Use Windows Update troubleshooter
- Check the status of Windows Update Services
- Reset all components of Windows Update
- Perform SFC and DISM analyzes
- Resave the Windows Update system files (.dlls).
Before you begin, first create a system restore point. This will help you go back if you need it in the future.
For the best result, I would recommend that you try the suggested methods in the same order as it is done here. Let’s see them in detail –
1]Use Windows Update troubleshooter
Windows Update’s troubleshooter is the easiest method you can try to fix the problem on your Windows 10 PC.
To do this, open Windows settings> Update and security then select the Troubleshoot tongue.
Now go to the right pane, select Windows Update, then press the key Run the troubleshooter button.
In addition, you can also try Microsoft’s online troubleshooting tool and see if it helps you get rid of this problem.
2]Activate Windows Update services
According to user reports, they were able to fix this problem simply by activating essential Windows Update services that were not working.
To activate them, you must first open an elevated command prompt.
Once it opens, copy and paste the following text code, then press Enter after each command.
SC config trustedinstaller start=auto SC config bits start=auto SC config cryptsvc start=auto
Then restart your Windows device and check if the problem is resolved now.
3]Reset Windows Update components
Manually reset the default Windows Update component. Now restart your computer and once it starts up, check if the problem persists. If this is the case, go to the next effective workaround.
4]Perform SFC and DISM analyzes
Sometimes this serious problem can also occur due to the corruption of some files and a system problem. In this case, it is always advisable to run the System File Checker tool.
To run the SFC scan, open an elevated command prompt, and type the following command –
sfc /scannow
Then press Enter to start the scanning process.
Once the process is complete, restart your device, then run the DISM tool to repair damaged system files.
In an elevated command prompt window, copy and paste the following text code. In addition, press Enter after each command to execute it.
Dism.exe /online /cleanup-image /scanhealth Dism.exe /online /cleanup-image /restorehealth
Wait for a while until the process is complete. When finished, restart your computer and check if it fixes the problem.
5]Reregister Windows Update System Files (.dlls)
Another possible cause of the C80003F3 error is the DLL file. Maybe it is not registered correctly. This problem was found mainly on the old version of Windows. So, if you are also one of them facing this problem, you should re-register all DLL updates.
To do this, open the Run dialog using the Win + R keyboard shortcut.
Type “notepad” and press Ctrl + Shift + Enter Shortcut key to run Notepad as administrator.
If the UAC prompts you on the screen, click on the Yes to grant administrative privileges.
Inside the raised notepad, copy and paste the following text code –
net stop bits net stop wuauserv net stop appidsvc net stop cryptsvc Del "%ALLUSERSPROFILE%Application DataMicrosoftNetworkDownloaderqmgr*.dat" Del %windir%SoftwareDistribution*.* /S /Q Ren %windir%system32catroot2 catroot2.bak sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU) sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU) cd /d %windir%system32 regsvr32.exe /S atl.dll regsvr32.exe /S urlmon.dll regsvr32.exe /S mshtml.dll regsvr32.exe /S shdocvw.dll regsvr32.exe /S browseui.dll regsvr32.exe /S jscript.dll regsvr32.exe /S vbscript.dll regsvr32.exe /S scrrun.dll regsvr32.exe /S msxml.dll regsvr32.exe /S msxml3.dll regsvr32.exe /S msxml6.dll regsvr32.exe /S actxprxy.dll regsvr32.exe /S softpub.dll regsvr32.exe /S wintrust.dll regsvr32.exe /S dssenh.dll regsvr32.exe /S rsaenh.dll regsvr32.exe /S gpkcsp.dll regsvr32.exe /S sccbase.dll regsvr32.exe /S slbcsp.dll regsvr32.exe /S cryptdlg.dll regsvr32.exe /S oleaut32.dll regsvr32.exe /S ole32.dll regsvr32.exe /S shell32.dll regsvr32.exe /S initpki.dll regsvr32.exe /S wuapi.dll regsvr32.exe /S wuaueng.dll regsvr32.exe /S wuaueng1.dll regsvr32.exe /S wucltui.dll regsvr32.exe /S wups.dll regsvr32.exe /S wups2.dll regsvr32.exe /S wuweb.dll regsvr32.exe /S qmgr.dll regsvr32.exe /S qmgrprxy.dll regsvr32.exe /S wucltux.dll regsvr32.exe /S muweb.dll regsvr32.exe /S wuwebv.dll netsh winsock reset netsh winhttp reset proxy net start bits net start wuauserv net start appidsvc net start cryptsvc
Then click on the File menu and select “Save as” option. You can also use the Ctrl + Shift + S shortcut key to save the file.
Here you need to choose an appropriate location, give a correct name, then save the file with .bat extension.
When the batch file is created, right click on the saved file and select Execute as administrator to execute the text code.
When the procedure is complete, close the Notepad window and try reinstalling Windows updates.
I hope this guide has helped you solve the problem.
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