Windows 10: Some DLL Files are missing or corrupted in Windows Defender anti-virus

I decided to run command prompt with run as administrator right and you will see 5 missing DLL files below. Is that a possibility that I couldn't run Windows Defender as my anti-virus program in my desktop but Widnows Defender firewall is running with no problem?

regsvr32 wuaeung.dll -- missing
regsvr32 wucltui.dll -- missing
regsvr32 softpub.dll -- good
regsvr32 wintrust.dll -- good
regsvr32initpki.dll -- missing
regsvr32 wups.dll - good
regsvr32 wuweb.dll -- missing
regsvr32 atl.dll -- missing
regsvr32 mssip32.dll -- good

Here is one example of missing dll file.

RegSvr32

( X ) The module "wuweb.dll" failed to load.

Make sure the binary is stored at the specified path or debug it
to check for problems with the binary or department .DLL files.

The specified module could not be found.

So that mean that there are missing DLL Files in Windows Defender which cannot run in my operating system of Windows 10 Pro 64-edition? Can this be done to repair or have to reinstall or what?

Thank you,

John

:)

 

MSVCP100.dll and MSVCP100.dll missing

Hello,

May we know if you have made any software changes to your device prior to the missing DLL files?

As a first troubleshooting step, we suggest that you run the System File Checker tool and see if it helps with the issue. System File Checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted
files. If a Windows Resource Protection (WRP) file is missing or is corrupted, Windows may not behave as expected.

To run the System File Checker tool, you may follow the steps below:

• Open an elevated command prompt. To do this, click Start, type
  Command Prompt or cmd, then right-click it, and click
  Run as administrator.
• At the command prompt, type the following command, and press Enter:
  • sfc /scannow
• After the process is finished, you may receive the results of the scan, if it found any corruptions within your device.

We look forward to an update from you.

Regards.

 

Windows Defender realtime scanning will not switch on - it detects another anti-virus product.

Windows Defender realtime scanning will not switch on, and the message suggests there is another anti-virus product present but if there is it does show up in Window 10 UI.

The long story is that I am troubleshooting a problem with application software. The manufacturer suggest removing Bitdefender because there product is incompatible. I thought I would give this a try, if only to element Bitdefender as a cause.

Firstly, I upgraded from Bitdefender 2016 to 2017 to see if that made a difference. The application still failed so I decided to try removal.

• I used the standard uninstall to remove Bitdefender 2017, rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection
• I download the uninstall application for Bitdefender 2017, ran it then rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection
• I checked the file system and all Bitdefender files have been deleted.
• I check the registry and found a couple of references to Bitdefender Wallet, then deleted these.
• I rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection
• I reran the uninstall application for Bitdefender 2017 then rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection.
  

I can find no traces of Bitdefender so I wonder why Windows Defender detects another anti-virus software. I've check other posts but couldn't find additional steps for uninstalling an anti-virus software. Any suggestions?

Moved from Windows 10

 

Anti Virus Problems

You should not be using more than one anti-vrus program on your computer. Read the
IMPORTANT NOTE about not using more than one anti-virus program in this

topic.

The inability to turn on Windows Defender 8/10 is typically the result of having a third-party anti-virus installed or failure to remove it properly (completely). Since Windows 8/10 Defender includes anti-virus protection, it is
disabled during the installation of another anti-virus program. If a trial anti-virus (i.e. McAfee, Norton, etc) came
preinstalled on your computer or you installed one, Windows Defender will be turned off (disabled). Windows Defender recognizes the install and automatically disables itself when other anti-virus products are used
to avoid conflicts. Windows Defender will remain disabled until that anti-virus software has been completely uninstalled. In some cases, you may need to download and run the anti-virus vendor's clean up tool to remove any remaining
remnants.

• Replacing your Anti-virus - List of Antivirus Uninstallers and Removal Tools
• Microsoft Wiki: List of anti-malware product removal tools by Stephen Boots,
  MVP

After removal of the third party anti-virus, Windows 8/10 Defender needs to be
activated if you choose to use it. When uninstalling the third-party anti-virus Defender should automatically turn itself on but sometimes you may receive a message indicating
your system has no protection...click here to turn on Windows Defender. If not, and Defender remains disabled, you will need to manually turn it on.

• How to turn Windows Defender On or Off in Windows 10
• How to turn Windows Defender On or Off in Windows 8