All other Antivirus programs have been removed from this computer by a Norton technician that gave up after a while. I certainly appreciate your efforts in trying to resolve the issue by following certain troubleshooting steps.
However, as you have mentioned that the Antivirus was uninstalled, there are chances that the registry permissions for Windows Firewall was changed. This will open Run. Right click on the file and click on Delete.
Now double-click on Default key and change the Value Data to 0. Note: Serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. To backup and restore registry key, refer to this link. Try running the troubleshooter for Windows Firewall and see if that helps.
Refer the article Automatically diagnose and fix problems with Windows Firewall. This post shows you the answer. Most of the time, the Windows Defender error occurs on a computer that has the third-party antivirus software. It can also be caused by the corrupted registry key belonging to Windows Defender.
Or the Windows Defender may be blocked by the group policy. However, in the following section, we will show you how to solve the Windows Defender error Windows If you have the same problem, try these solutions. As we have mentioned in the above section, the Windows Defender error will be caused by the third-party antivirus software. Step 1: Type Control Panel in the search box of Windows 10 and choose the best-matched one to enter its main interface.
Step 2: The choose Uninstall a Program under Programs to continue. Justo to mention another possibility: what I've found is that AVG Antivirus stops the Windows Defender's service and won't let you start it. Office Office Exchange Server. Not an IT pro? Windows Server TechCenter. Sign in. United States English. Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:.
Archived Forums. Windows Server General Forum. Sign in to vote. On each logon following installation of the Desktop Experience feature which includes Windows Defender , the following error message appears: "Application failed to initialize: 0xba. Is there any way of getting the Windows Defender service to start?
Edited by sejong Tuesday, May 24, PM. Friday, July 20, PM. Friday, August 10, PM. I have the same issue, but have not changed the Program data location.
Then continue with the other steps to go over your install most thoroughly. This reinstalls Windows in about an hour while saving your files, apps and most settings, solves many problems while also bringing it up to the latest version which you need anyway and by the most stable method.
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP Potentially Unwanted Products. Thoroughly research any product advertised on the sites before you decide to download and install it.
In reply to Andre for Directly's post on October 5, Thank you. The registry value was 2 already. I will try the other response and consider repair upgrade.
Looking forward to your update. Actually after just running the windows update, Defender service is active again, case closed Sumit Independent Advisor Independent Advisor.
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