oleacc.dll Not Found: How to Fix or Download It Again

Find out how to get the missing DLL in minutes

by Kazim Ali Alvi
Kazim Ali Alvi
Kazim Ali Alvi
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows. And at times, unscrewing the device to take... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • The oleacc.dll file is published by Microsoft and is a part of the default Windows installation package.
  • When the DLL is missing, it's most likely the corrupt system files or issues with the affected app to blame.
  • To fix things, terminate processes using the DLL, repair the system files, or perform an in-place upgrade.
fix missing OLEACC.dll error
For fixing DLL errors, we recommend Fortect: This tool will replace the damaged or corrupted DLLs with their functional equivalents using its dedicated repository where it has the official versions of the DLL files.
  1. Download and Install Fortect on your PC
  2. Launch the tool and Start scanning to find DLL files that could be causing PC problems
  3. Right-click on Start Repair to replace broken DLLs with working versions
  • Fortect has been downloaded by 0 readers this month.

Any healthy Windows PC has hundreds of DLLs or sometimes even more if there are far too many programs installed. A DLL or Dynamic Link Library is a file shared by several applications simultaneously, thus increasing the likelihood of error. And oleacc.dll is often affected.

When there are issues, users come across a DLL not found error, and the application relying on it fails to launch. Problems like these are common and always easily fixable, whether it’s a DLL published by Microsoft or a third party. So, let’s find out!

What is the Oleacc dll?

The oleacc.dll, published by Microsoft, is a system file and part of the Microsoft Active Accessibility components in the Control Panel. It performs a wide range of functions and is sometimes called upon by programs.

Here are a few reasons oleacc.dll is missing on your PC:

  • System files are corrupt: In most cases, the problem appears when Windows has corrupt system files, and this also affects the functioning of the PC in general.
  • The DLL file was deleted: A few users realized the DLL was accidentally deleted, either due to an inadvertent fault of theirs or by a third-party program accessing it.
  • Program is unable to access the DLL: Some programs require the DLLs to be stored in specific directories for easy accessibility, and when that’s not the case, it throws a missing DLL error.

How do I fix a missing oleacc.dll error?

Before we move forward, try these quick solutions:

  • Restart the computer to terminate any non-critical program actively using the DLL and rendering it inaccessible to others.
  • Check for the missing DLL in the Recycle Bin and restore the file.
  • Download the pending Windows updates.
  • Disable any third-party antivirus installed on the computer.

If none work, head to the fixes listed next.

1. Re-register the DLL

  1. Press Windows + R to open Run, paste the following command, and hit Enter:regsvr32 oleacc.dllregsvr32 oleacc.dll to fix oleacc.dll
  2. If you come across a confirmation, run the affected program again and check whether the error is fixed.register dll

2. Manually replace the DLL

A quick solution for the oleacc.dll Outlook crash is to manually replace the DLL with a healthy one from another PC. The DLL’s storage location is:C:\Windows\System32

System32 folder

So, open the System32 folder on another Windows PC, copy the DLL file to a USB drive, and then move it to the same location on the affected computer. Just make sure to remove the corrupt/unreadable oleacc.dll that existed beforehand.

If the error persists, paste a copy of the DLL into the program’s directory, then restart the computer to verify whether things work out.

As an alternative, it’s much easier to go for specialized solutions that can repair DLL file issues and replace corrupted ones automatically.

3. Repair the corrupt system files

  1. Press Windows + S to open Search, type Command Prompt in the text field, and click on Run as administrator.command prompt
  2. Click Yes in the UAC prompt.
  3. Paste the following three commands individually and hit Enter after each to run DISM:DISM /Online /Cleanup-Image /CheckHealth DISM /Online /Cleanup-Image /ScanHealth DISM /Online /Cleanup-Image /RestoreHealth
  4. Now, run this command for the SFC scan:sfc /scannowsfc scan to fix oleacc.dll
  5. Once done, restart the computer for the changes to come into effect.

In case it’s the corrupt system files responsible for the oleacc.dll is either not designed error message, running the DISM tool and SFC scan should fix things. These two identify any corrupt files and replace them with their cached copy stored on the PC.

4. Reinstall the app throwing the error

  1. Press Windows + R to open Run, type appwiz.cpl in the text field, and hit Enter.appwiz.cpl
  2. Select the affected application from the list, and click on Uninstall.uninstall to fix oleacc.dll
  3. Follow the on-screen instructions to complete the process.

If the problem is limited to a particular application and it wasn’t fixed even after you put the DLL in its directory, chances are that the app wasn’t installed properly.

The best option here is to uninstall the application and download it from scratch. This worked when oleacc.dll was missing in Chrome and Citrix.

5. Perform an in-place upgrade

Tip icon Tip
The process here details performing an in-place upgrade on Windows 11. Users on Windows 10 will need to download the Media Creation Tool and use it for the process.
  1. Go to Microsoft’s official website, select the required edition and product language, then download the Windows 11 ISO.Windows 11 iso to fix oleacc.dll
  2. Open the contents of the ISO and launch the setup.exe file.setup.exe
  3. Click Yes in the prompt.
  4. Click on Next to proceed.next
  5. Now, click Accept to agree to Microsoft’s notices and license terms.accept
  6. Finally, verify that the setup reads Keep personal files and apps, and click on Install to start the in-place upgrade.in-place upgrade to fix oleacc.dll

As a last resort, you can always perform an in-place upgrade to replace all system files, basically, reinstall Windows. But this doesn’t affect the stored files or apps, so all your data is safe.

Once done with the repair upgrade, the missing oleacc.dll in PowerBuilder and other applications will be fixed.

Before you leave, check the best DLL repair tools and get one today to prevent such errors in the future.

For any queries or to share more solutions with us, drop a comment below.

Still experiencing issues?


If the above suggestions have not solved your problem, your computer may experience more severe Windows troubles. We suggest choosing an all-in-one solution like Fortect to fix problems efficiently. After installation, just click the View&Fix button and then press Start Repair.

This article covers:Topics: