What is microsoft windows host process rundll32?

Do you keep receiving a “Windows host process (Rundll32) has stopped working” error while using Windows 10? This error mostly shows up when you attempt lớn open or interact with specific programs—native or third-party—on your computer. But it can also pester you randomly for no obvious reason. Why does this happen?

Windows 10 uses the Rundll32 process to exedễ thương 32-bit DLL (dynamic-links library) files. These files contain functions that are shared across multiple applications. However, conflicting software, improperly configured settings, or corrupted system files can cause Rundll32 khổng lồ break down, hence the reason for the error.

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5. Follow the onscreen prompts khổng lồ fix any issues detected by the File & Folder Troubleshooter.

Update, Reinstall, or Uninstall Programs

Did the issue occur after installing a particular application on your computer? For example, programs such as Nero & the K-Lite Codec Pachồng have sầu a history of causing the “Rundll32 has stopped working” error.

If so, try updating or reinstalling the program. In case that doesn’t work, you may want to consider removing it from your computer entirely.

Disable Services và Startup Programs

Third-các buổi party background services and startup programs can also result in the Rundll32 error. Cheông xã if disabling these helps. You can then go through a process of elimination to lớn figure out the exact thành công causing the issue.

Disable Third-Party Services – System Configuration

1. Press Windows+R lớn open the Run box. Then, type msconfig và select OK.

2. Switch to the Services tab. Then, kiểm tra the box next khổng lồ Hide all Microsoft services (which then reveals only third-party services) and select Disable all.


3. Select Apply, then OK, lớn save the changes. Select Exit without restart when prompted.

Disable Startup Programs – Task Manager

1. Right-clichồng the taskbar and select Task Manager.

2. Select More Details.

3. Switch to lớn the Startup tab.

4. Piông xã each third-buổi tiệc nhỏ startup program and select Disable.


5. Cthua the Task Manager.

Restart your computer. If the Rundll32 error doesn’t show up anymore, start re-enabling a few services and startup programs at a time. That should help you pinpoint the problematic sản phẩm. You can then update the relevant program or remove it from your computer.

Roll Baông xã Audio/Video Drivers

The “Rundll32 has stopped working” error can crop up after updating audio or Clip drivers. For example, drivers by Realtek, Sound Blaster, & NVIDIA can cause that in rare instances. Use the Device Manager in Windows 10 to lớn roll them back.

1. Right-cliông chồng the Start button và select Device Manager.

2. Exp& Sound, đoạn phim và game controllers.

3. Right-click the sound driver và select Properties.


4. Switch khổng lồ the Driver tab và select Roll Back Driver. Repeat for any other drivers within the list.


5. Expand the Display Adapters section within the Device Manager & repeat steps 34.

Update Audio/Video Drivers

If rolling back the audio và đoạn phim drivers didn’t help (or if you couldn’t roll them bachồng earlier), try updating them instead.

1. Open the Device Manager.

2. Exp& Sound, Clip & game controllers.

3. Right-cliông chồng the sound driver và select Update Driver.


4. Select Search automatically for drivers lớn scan for & apply the lachạy thử drivers automatically. Repeat for any other drivers within the menu.

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5. Exp& the Display Adapters section and repeat steps 3 and 4.

Alternatively, you can tải về the lademo audio or Clip drivers directly from the manufacturer’s website & update them manually.

Update Windows 10

An outdated version of Windows 10 can result in all sorts of issues. If you haven’t updated your computer in a while, try doing that now.

1. xuất hiện the Start menu, type windows update, và select Open.

2. Select Check for updates.


3. Install any updates, if available.

Disable Data Execution Prevention

Data Execution Prevention (DEP) is a Windows 10 feature that monitors & protects the system memory from malicious attacks. However, it can stop the Rundll32 process from working properly. Chechồng if disabling DEPhường helps.

1. Open the Start menu, type command prompt, and select Run as administrator.

2. Copy and paste the following commvà into lớn the elevated Commvà Prompt console:

bcdedit.exe cộ /phối current nx AlwaysOff


3. Press Enter khổng lồ disable DEP.

Did that fix the “Rundll32 has stopped working” error? If yes, you may still want to continue with the rest of the fixes since keeping DEPhường disabled is a security risk.

Note: To enable Data Execution Prevention at a later time, run the following comm& in an elevated Commvà Prompt console:

bcdedit.exe /phối current nx AlwaysOn

Scan for Malware

Malicious programs can masquerade as DLL files và end up causing “Rundll32 has stopped working” errors. Try using Windows Security to scan your computer for malware.

1. Open the Start menu, type windows security, and select Open.

2. Select Virus và threat protection.

3. Select Scan options.

4. Select Full scan. Then, select Scan now.


If Windows Security failed khổng lồ dig up anything, we recommkết thúc using a dedicated malware remover such as Malwarebytes for a thorough computer cleanup.

Run an SFC Scan

An SFC (System File Checker) scan allows you lớn detect và repair corrupted system files that prsự kiện the Rundll32 process from running properly.

1. mở cửa the Start thực đơn, type command prompt, and select Run as administrator.

2. Enter the following command:

sfc /scannow


3. Press Enter.

The SFC scan may take several minutes khổng lồ complete.

Run a DISM Scan

If the SFC scan failed khổng lồ find & fix any issues, run a DISM (Deployment Image Servicing và Management) scan instead.

1. Open the Start thực đơn, type commvà prompt, và then select Run as administrator.

2. Run the following command:

DISM /Online /Cleanup-Image /CheckHealth


3. If DISM ended up detecting issues on your computer, run the following commands one after the other.

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

What Else Can You Do?

If none of the fixes above resolved the “Windows host process (Rundll32) has stopped working” error, you may want khổng lồ perform a Windows 10 factory rephối by heading over khổng lồ Start > Settings > Update & Security > Recovery. You can choose between keeping or removing your files và programs during the reset procedure.

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You can also try re-installing Windows 10. There could be a deep underlying issue that only a complete reinstallation of the operating system can fix. Just remember to create a complete backup of your data beforeh&.


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