Windows Defender Cannot Be Activated After Uninstalling Comodo Anti Virus– Help Needed (Windows 10)
Hello Community, I’m experiencing a problem with my Windows 10 laptop and hope to get some guidance. Official support is no longer available for my system, so I’m turning to the community for help. Problem Comodo Anti Virus /Internet Security / Internet Security Essentials had been installed on my laptop for a long time. While Comodo was active, I could not load certain websites properly, and games like League of Legends would not run. For this reason, I recently uninstalled Comodo. After the uninstallation, the previously blocked websites and games work again. Current issue: My Windows Defender Antivirus cannot be activated. In Windows Security, it shows: “Virus & threat protection: Action required” “The threat service has stopped. Start it now” Clicking “Start now” only shows a loading indicator and then an “An unexpected error has occurred” message. I have administrator rights, but Defender still cannot be activated. Steps I’ve Tried 1. Registry checks Path: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Checked entries like DisableAntiSpyware and DisableRealtimeMonitoring Modifications often failed → access denied 2. PowerShell commands Set-MpPreference -DisableRealtimeMonitoring $false → errors: “Parameter not found” or “Access denied” Other commands like Set-ItemProperty or Set-Content → errors: “UnauthorizedAccessException” or “InvalidArgument” 3. CMD / SC commands sc config WinDefend start=auto Error: “SC Open Service Error 5 – Access denied” 4. Service check Get-Service WinDefend | Select-Object Status, StartType → Status: Running, StartType: Automatic Despite the service running, Defender cannot be enabled in Windows Security 5. System restore point created (For Comodo Revomal Tool) Drive C: protection enabled Backup created as a precaution Insights / Analysis (Speculations) After uninstalling Comodo, websites and games work again → this suggests that Comodo previously installed network filters or drivers that blocked them. It is possible that remnants of Comodo (drivers, services, registry entries) are preventing Windows Defender from starting. Firewall, App & Browser protection, and Exploit protection are active → partial protection, but Defender is not functional. I am not certain if there are other causes, but based on my experience, it seems strongly related to leftover Comodo components. Has anyone experienced similar issues where Defender remains blocked after uninstalling Comodo? Are there safe methods to fully reactivate Defender without risking system stability? Should I use the official Comodo Removal Tool to remove all remnants? Are there alternative steps to try before using a removal tool? I would greatly appreciate any guidance, tips, or steps I can try to get Windows Defender working again. Thank you in advance!
Sudden crashes and BSOD in Win10
Hello! I have an Asus Vivobook 15, that came with Keep-OS and I installed Windows 11 using the official website and step by step. Last week it started crashing and having BSOD's, getting stuck on boot and sometimes not even recognizing the OS (win11). It started after a Win Update. Since I haven't found a solution and Asus does not care for the consumer, had no alternative and downgraded to Win 10. I'm still facing some crashes and BSOD. I checked the SDD, manually and with Crystal Disk Info (98% health), checked the fan... I really don't know what else to do. https://1drv.ms/u/c/7f13816d644baeb5/IQCrQrt8VfRkRZAOG5BT6By0ASV3wLkzdMiLZ-ctbrSsW84?e=PTUVlN Here is the System Events Log.Windows 10 ESU – Registrierungsbutton erscheint nicht trotz 22H2 (Rollout-Basis)
Hallo zusammen, ich möchte mein Windows 10 Pro-System für die Extended Security Updates (ESU) registrieren. Alle Voraussetzungen sind erfüllt (Version 22H2, Build 19045.6396, aktuelle Updates installiert, Microsoft-Konto aktiv). Trotzdem erscheint in Windows Update keine Schaltfläche „Jetzt registrieren“. Der Microsoft-Support hat mir heute bestätigt, dass der ESU-Rollout phasenweise fortgesetzt wird, auch nach dem 14. Oktober, nur Geräte unter 22H2 vom Supportende betroffen sind, und dass mein System automatisch berücksichtigt wird. Da ich mein Gerät gern rechtzeitig registrieren möchte, um Sicherheitsupdates nahtlos zu erhalten, meine Frage an das Entwicklerteam: Gibt es einen bekannten Zeitrahmen für den weiteren Rollout der ESU-Registrierung an 22H2-Geräte, oder spezifische Regionen- bzw. Kontoabhängigkeiten? Vielen Dank und viele Grüße Matthias
0x000000e blue screen error on boot after mbr2gpt
Hello, I just tried converting my boot disk to gpt in order to upgrade to Windows 11 from 10. I don't have screenshots on the cmd while doing so, but I remember it said it was successful. I have disabled CSM support and enabled Secure boot and made sure it says secure boot is active on the BIOS as well, but I still get this error when trying to boot. I do have 2 identical boot options which I've read can happen after mbr2gpt, but neither seem to work. I am able to boot in safe mode and would love any help getting my PC to boot now, and while I'm fine with wiping and rebuilding windows as a last resort, I would love to not have to reinstall everything. I take being able to boot in safe mode as a sign I might just have to repair with my partitions or something so I'm hoping I don't have to reset everything. Thank you!Windows 10 Download Speed is very slow
Although there is no internet connection speed issue on other mobile devices and computers connected to the same modem, the internet download speed is 2 Mbps and the upload speed is 9 Mbps on my computer. Both Windows 10 Pro and MacOS are installed on the same computer (i.e Macbook Pro). When I switch to MacOS, the internet download speed is 75Mbps as it should be. I've tried the most common solutions suggested on Microsoft's site and other sites on the subject. None of them worked out. I reinstalled Windows 10 by protecting the files and programs on my computer, but there was no solution. I also shut down all non-Windows applications and services that started automatically when the computer was booted, again, there was no solution. I tried 7-8 more actions without any solution. My computer did not have such a problem 2 weeks ago. It started suddenly. Windows 10 Pro was upgraded recently to version 1909. Even though, I'm not sure I suspect this might be the problem. Any advice is appreciated. Thanks in advance. Update after 5 years (22 August 2024): I could not find a solution to this problem. I experienced this problem twice. Each time, I had to completely format the Windows installation on Boot Camp. Then, reset macOS. After that reinstalled Windows on Macbook Pro via Boot Camp from scratch. That solved my issue. I suspect the issue might be due to some updates that came via Boot Camp. Also, don't install Wifi related updates provided as optional updates on Windows if you don't experience any issue at that moment. Such updates may be the reason as well.
WMI unknown account in security permissions
Hi everyone, We are using WMI on Azure AD computers to give our NAC system (PortNox) access to read a certain process in the client. We have an issue where for some reason the account was mistakenly deleted and in this case when opening the WMI CIMV2 namespace security we see that an unknown account remained in the security permissions. When I try to use PowerShell to remove the unknown account I get unknown error. Anyone has any idea what I can do to get out of this mess? Thanks in advance, Rahamim.WSUS edge update fail 0x80070643
Hello everyone, it's a little bit of time that one of my clients do not install from wsus server the update for microsoft edge properly. After the install get to 100% return the error code 0x80070643. Already tried to install manually (download edge business from ms site), reset all windows update components. Other updates are installed succesfully. The event log report a different error code (only a generic installation error with code 0x8024200B). The very wierd part is that if I disable the wsus policy and check for update in edge information page, the update install succesfully. Other clients install it from wsus without issues.
