Fixing OLEAUT32.dll Missing / Not Registered & Other Errors (+Free Download)

Why DLL Errors Occur?

The majority of DLL files come pre-installed with Windows. When you install an application, it expects that the required library is installed on the computer, and when a DLL file is damaged or missing, an error message appears on the screen.

Viruses and other malware are the most common causes of DLL problems. Sometimes it’s because the files were accidentally deleted or are no longer supported. In any case, a DLL error indicates that your system is lacking the critical data required for apps to function.

9 Methods to Fix OLEAUT32.dll Errors

If an error with OLEAUT32.dll arises, the file must be manually changed or replaced automatically using sophisticated utility tools. Both techniques are effective, albeit the manual approach is dangerous because it may result in more problems, whilst automatic solutions provide a repair with little effort on your part.

We’ve compiled a list of solutions that have been shown to help with your problem.

1st Method – Automatically Fix OLEAUT32.dll Errors With iolo System Mechanic

Anyone experiencing OLEAUT32.dll issues should use a professional system repair application like iolo System Mechanic, as previously stated. iolo System Mechanic not only removes DLL errors, but it also detects and repairs outdated systems, drivers, and secures your PC from internet threats.

2nd Method – Download and Install 143.OLEAUT32.dll Manually

The 143.OLEAUT32.dll can be downloaded and installed manually by downloading it from a legitimate website. Once you’re done downloading the file, you can simply put it in its appropriate folder. For 32-bit operating systems, the file should be put in “C:/Windows/System32” and for 64-bit operating systems, it should be placed in “C:/Windows/SysWOW64”.

Download OLEAUT32.dll For Free Here:

• You can download the OLEAUT32.dll (64-bit version) by clicking here (from MEGA.nz).
• You can download the OLEAUT32.dll (64-bit version) by clicking here (from MEGA.nz).

3rd Method – Manually Register the 143.OLEAUT32.dll File

You’ll have to register the missing 143.OLEAUT32.dll file if putting it in the right directory doesn’t solve the problem.

Step 1: Hold down the “Windows” key press the letter “R” and type in “cmd”. Hold down the “ctrl+shift” keys and press enter and click “Yes” in the confirmation prompt.

Step 2: Type in the following command in the Command Prompt “regsvr32 /u 143.OLEAUT32.dll” and press enter. Once done, type in “regsvr32 143.OLEAUT32.dll”.

If the above-mentioned steps did not fix the missing MSGR3FR.dll error, then move on to the next troubleshooting steps.

4th Method – Use the Windows System File Checker (SFC) to Fix 143.OLEAUT32.dll Errors

Use the Windows SFC or System File Checker to scan for any missing or corrupt Windows DLL files and recover your data if some Windows operations aren’t working or if Windows crashes.

Step 1: Open the run command line and by pressing down the “Windows + R keys” and type in “cmd” and press enter.

Step 2: Type in “sfc /scannow” and press enter.

Step 3: Wait for the scan to complete. There’s nothing more to do as it will automatically fix any errors it has found.

5th Method – Launch the DISM Tool (Deployment Image Servicing and Management)

In order to fix the 143.OLEAUT32.dll issues, you might need to use and run the DISM tool on your PC. Follow the steps below to do so.

Step 1: Press the Windows and R keys at the same time and type in “cmd” and press “OK”

Step 2: The DISM tool will start to scan your computer and will automatically fix any errors that it has detected. Once it is done, restart your computer and check if the error persists.

6th Method – Update Windows Drivers to Fix DLL Issues

Windows uses various drivers for your hardware such as printers, GPUs, processors, keyboards and etc. in order for them to work properly. And sometimes when these drivers are outdated or damaged – they could also cause DLL issues and errors (including 143.OLEAUT32.dll). So that’s why it’s important to always keep them up to date.

Read the steps below to update any necessary drivers.

Step 1: Go to Taskbar’s search box – write Device Manager – choose Device Manager.

Or if you’re unable to locate it — press the “Windows logo button” + “R” to open Run terminal and enter “devmgmt.msc”.

Step 2: Select a category to look at the devices’ names – then right-click the one that needs to be updated.

Step 3: Choose Search automatically for updated driver software.

Step 4: Look at Update Driver, and select it.

Step 5: If Windows doesn’t find the driver automatically – you can download and use iolo System Mechanic to update the drivers and DLLs. Or you can search the hardware manufacturer’s website for necessary drivers.

7th Method – Run the Windows Update Tool to Check for New Updates

DLL issues, such as that of the missing 143.OLEAUT32.dll error, can be caused by outdated Windows drivers and files. Use the Windows Update program to scan for any available updates to keep your Windows updated.

Step 1: Press the “Windows + R” keys simultaneously and type “control update”.

Step 2: In the Windows Update window, click on “Check for Updates” and wait for it to check for any available updates.

Let the Windows Update Tool install any new updates it finds and wait for them to finish. It’s possible that you’ll have to reboot your computer to complete the installation of the new updates.

8th Method – Scan Your PC for Malware and Fix Virus Damaged Files to Fix DLL Errors

It’s no surprise that viruses and other malware might damage your system files and even delete them on purpose or replace them with identically looking ones to further exploit your system.

That is why it’s important to always use a reliable antivirus tool to keep your PC safe. This is how you can scan your PC with an in-built Windows Defender.

Step 1: Press “Win key” + “I” key combination to open the Settings window.

Step 2: Select Update and Security option and go to Windows Defender section.
OR just press “Win key” +”R” and type “windowsdefender:” to launch the Defender.

Step 3: At the bottom of the Win Defender settings there will the checkbox “Windows Defender Offline scan”. In order to start it, click “Scan Now”.

After clicking “Scan Now” button, the PC will reboot and automatically start searching for any viruses and malware. When the scan is completed, the computer will restart, and in the notifications, you will see a full report with found viruses and etc.

Alternatively, you can download and scan your PC with iolo System Mechanic which will not only find viruses and malware but will also fix any damaged files, including DLLs and so much more.

9th Method – Perform a System Restore to Fix DLL Errors

Step 1: Restart your computer to “Safe Mode with Command Prompt”. Click the “Windows” or “Start” button on the desktop and press down the “Shift” key and click “Power” and “Restart”

Step 2: While the computer is booting back up, tap on the “F8” key once every second until the “Advanced Boot Options” comes on the screen and use the “Arrow Keys” to select the “Safe Mode with Command Prompt” and press “Enter”

Step 3: In the Command Prompt, type in “cd restore” and press enter and type “rstrui.exe” and press enter again

Final Words

Whatever the severity of the DLL problem you’re having in Windows, it’s critical that you address it as soon as feasible and fully as possible. If left unchecked, minor flaws might easily turn into major ones. iolo System Mechanic optimizes your system and prevents Windows issues like the 143.OLEAUT32.dll error, so you don’t have to constantly check for faults, especially during startup.