Blandt andre Windows Defender - fejl er fejlkoden 0x80240438^{(error code 0x80240438)} , som pc-brugere kan støde på på deres Windows 10- eller Windows 11-enhed. Dette indlæg er beregnet til at hjælpe berørte brugere med de bedst egnede løsninger til let at løse dette problem.

Error Code 0x80240438, The definition updates could not be installed, Please try again.

Hvorfor virker Windows Defender ikke?

I de fleste tilfælde, hvor du bemærker, at Microsoft Defender ikke fungerer^{(Microsoft Defender is not working)} på din Windows -pc, skyldes det normalt, at den registrerer en anden antimalware-software. I dette tilfælde, for at løse problemet, skal du sørge for at afinstallere tredjepartssikkerhedsløsningen fuldstændigt med et tredjepartssoftwareafinstallationsprogram^{(third-party software uninstaller)} eller endnu bedre bruge AV-dedikeret fjernelsesværktøj^{(AV dedicated removal tool)} .

Ret Windows Defender fejlkode 0x80240438^{(Fix Windows Defender Error Code 0x80240438)}

Hvis du står over for dette Windows Defender-fejl 0x80240438-^{(Windows Defender error 0x80240438)}  problem, kan du prøve vores anbefalede løsninger nedenfor i en bestemt rækkefølge og se, om det hjælper med at løse problemet.

1. Genstart internetenheden
2. Deaktiver midlertidigt tredjeparts AV/Firewall (hvis relevant)
3. Update Microsoft Defender via Command Prompt or PowerShell
4. Manually download and install latest definitions

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Restart internet device

As indicated on the error prompt, this Windows Defender error 0x80240438 could be a case of your Windows PC internet connectivity issues. So, make sure you have a stable internet connection and reboot your modem/router and see if the issue is resolved. If not, try the next solution.

2] Temporarily disable third-party AV/Firewall (if applicable)

Firewall og antivirus er vigtige for din systemsikkerhed, men nogle gange kan disse programmer forstyrre Windows 10/11 /11- opdateringen såvel som Microsoft Definition - opdateringsprocessen og som følge heraf udløse denne fejl. I dette tilfælde kan du, afhængigt af den sikkerhedssoftware, du har installeret, konsultere brugsanvisningen for, hvordan du deaktiverer sikkerhedssoftwaren.

Generelt kan pc-brugere deaktivere antivirussoftwaren - find dens ikon i meddelelsesområdet eller systembakken på proceslinjen (normalt i nederste højre hjørne af skrivebordet). Højreklik på ikonet og vælg muligheden for at deaktivere eller afslutte programmet.

3] Opdater Microsoft Defender^{(Update Microsoft Defender)} via kommandoprompt^{(Command Prompt)} eller PowerShell

Du kan prøve at opdatere Windows Defender via kommandoprompt^{(updating Windows Defender via Command Prompt)} eller opdatere via PowerShell^{(update via PowerShell)} og se, om processen fuldføres uden fejl.

4 ] Download og installer de seneste definitioner manuelt^{(] Manually)}

En anden holdbar løsning på problemer, når Microsoft Defender ikke automatisk downloader opdateringer^{(Microsoft Defender fails to automatically download updates)}  , er manuelt at downloade og installere de nyeste definitioner^{(manually download and install the latest definitions)} på din Windows-pc.

Enhver af disse løsninger burde virke for dig!

Kan Windows Defender repareres?

Windows Defender fungerer muligvis ikke korrekt, hvis softwaren ikke blev installeret korrekt eller er i konflikt med andre programmer, der kører på din Windows 10/11-computer. For at reparere softwaren kan du downloade og bruge vores freeware FixWin til at nulstille (du finder indstillingen under fanen Systemværktøjer^{(System Tools)} ) alle Windows Defender - indstillinger til standard.

Relateret indlæg^{(Related post)} : Rette fejl 0x80240438 til Windows-opdateringer og Microsoft Store

Windows Defender Error 0x80240438, Definition updates not installed

Among other Windows Defender errors iѕ error code 0x80240438 that PC users may encounter on their Windows 10 or Windows 11 device. This post is intended to help affected users with the most suitable solutions to readily resolve this issue.

Error Code 0x80240438, The definition updates could not be installed, Please try again.

Why is Windows Defender not working?

In most cases, where you notice that Microsoft Defender is not working on your Windows PC, is usually due to the fact that it detects another antimalware software. In this case, to resolve the issue, make sure you uninstall the third-party security solution completely with a third-party software uninstaller or better still use the AV dedicated removal tool.

Fix Windows Defender Error Code 0x80240438

If you’re faced with this Windows Defender error 0x80240438 issue, you can try our recommended solutions below in no particular order and see if that helps to resolve the issue.

1. Restart internet device
2. Temporarily disable third-party AV/Firewall (if applicable)
3. Update Microsoft Defender via Command Prompt or PowerShell
4. Manually download and install latest definitions

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Restart internet device

As indicated on the error prompt, this Windows Defender error 0x80240438 could be a case of your Windows PC internet connectivity issues. So, make sure you have a stable internet connection and reboot your modem/router and see if the issue is resolved. If not, try the next solution.

2] Temporarily disable third-party AV/Firewall (if applicable)

Firewall and antivirus are important for your system safety, but sometimes these programs can interfere with the Windows 10/11 update, as well as Microsoft Definition update process and consequently trigger this error. In this case, depending on the security software you have installed, you can consult the instruction manual for how to disable the security software.

Generally, PC users can disable the antivirus software – locate its icon in the notification area or system tray on the taskbar (usually in the lower right corner of the desktop). Right-click the icon and choose the option to disable or exit the program.

3] Update Microsoft Defender via Command Prompt or PowerShell

You can try updating Windows Defender via Command Prompt or update via PowerShell and see if the process completes successfully without errors.

4] Manually download and install latest definitions

Another viable solution to issues when Microsoft Defender fails to automatically download updates is to manually download and install the latest definitions on your Windows PC.

Any of these solutions should work for you!

Can Windows Defender be repaired?

Windows Defender may not work correctly if the software wasn’t installed properly or is conflicting with other programs running on your Windows 10/11 computer. To repair the software, you can download and use our freeware FixWin to reset (you will find the setting under the System Tools tab) all Windows Defender settings to default.

Related post: Fix Error 0x80240438 for Windows Updates and Microsoft Store

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