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By landing on this page you are most probably trying to download the Oleacc.dll DLL file to get rid of the error:

Windows Error - Oleacc.dll

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Unable to start program due to Oleacc.dll being missing from your computer. Try reinstalling the program to fix the problem.

On this page, I have laid out the information you will need to know to understand what is causing this error as well as the versions of Oleacc.dll which are sorted by age and type of operating system.

What is the Oleacc.dll file?

Deep inside your systems folders (the System32 folder most likely) lives the Oleacc.dll library of code.

It is provided by Microsoft and comes with your installation of Windows to provide the Object Linking and Embedding functionality to your machine.

What it does for the computer is allow programs to talk with each other and also allows desktop programs and video games to use custom UI elements.

You may find that this file is kept close to the similar OLE32.dll library that also provides these functions to programs that need them.

This file in particular though provides the “accelerator keys” that you probably use all of the time without realizing that is what they are called.

A popular “accelerator key” is the copy command (CTRL + C) and then the partnered paste command (CTRL + V) which can work cross-program to copy text from Google Chrome to Microsoft Word for example.

Why do I need this file?

You need this Oleacc.dll file in its correct format in your Systems32 folder to provide certain functionality to Windows and many programs that run on it.

Most of the functionality that is included in this file relates to UI and mainly the accelerator keys such as the copy and paste keyboard commands.

You may think you could just live without these commands but most modern software is designed to throw an error up on the screen to inform you of the missing file.

This gives you a chance to fix the issue which if you are reading this you have taken the first steps to do so.

Further down this page is a table of the different versions of the DLL that you can download for free, try them out in your Systems32 folder to see if that fixes things before moving to the heavier solutions.

Why is the Oleacc.dll is missing error appearing?

A common cause of this error is that the company you have bought your PC from has forgotten to install the library.

On the other hand, if you have an older computer then it could be a sign of a more sinister issue in the form of a hardware or software fault.

A worst-case scenario is that you may have a virus lurking on your computer that is deleting important files and libraries to cause the user pain or even hold you to ransom.

The first and easiest solution to this issue is to re-install the Oleacc.dll library from this page, then if unsuccessful try a new anti-virus program.

How do you fix the problem?

The simplest solution to fix the “Oleacc.dll is missing” error and download the appropriate DLL file listed below.

After you have chosen the correct file and the download has finished you will need to put it in the target folder, as the warning message will let you know.

If you do not feel you are able to perform this task then you can download software that will try to automatically fix this for you by following these steps:

Method 1: (DIY) download/install DLL yourself

Underneath this block of text are the versions of the Oleacc.dll that we have found and cataloged, choose the right version for your system then download and install.

Oleacc.dll, available versions:

32/64 Bit (includes most recent)Auto FixU.S. English Download
64 Bit 7.2.9600.17415Active Accessibility Core ComponentU.S. English Download
32 Bit 7.2.9600.17415Active Accessibility Core ComponentU.S. English Download
32 Bit 7.2.9600.16384Active Accessibility Core ComponentU.S. English Download
32 Bit 7.2.9200.16384Active Accessibility Core ComponentU.S. English Download
32 Bit 7.2.15063.447Active Accessibility Core ComponentU.S. English Download
64 Bit 7.2.15063.447Active Accessibility Core ComponentU.S. English Download
64 Bit 7.2.14393.0Active Accessibility Core ComponentU.S. English Download
32 Bit 7.2.14393.0Active Accessibility Core ComponentU.S. English Download
64 Bit 7.2.10586.212Active Accessibility Core ComponentU.S. English Download
32 Bit 7.2.10586.212Active Accessibility Core ComponentU.S. English Download

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Which version of Oleacc.dll do I choose?

Ideally, you will want to choose the most recent (highest version number) DLL file with the correct 32 or 64-bit label for your system.

Choosing a 64-bit version of the file will help ensure that your system can take advantage of the faster processing power available in your PC.

Where should I place the DLL once downloaded?

First, try placing the file into the folder where the program you are having problems with lives.

Usually, if you have an error telling you that this file is missing it will tell you where it is missing from.

What if I need to register the Oleacc.dll file?

Once you have attempted the simplest solution of placing the DLL file into the target folder and found it hasn’t worked then you may have to register the change with Windows.

To do this you can save the DLL file to the C:WindowsSystem32 folder and then open a command prompt using admin rights, type “regsvr32 Oleacc.dll” and run it.

Method 2: (Auto) Have a program do it for you

A program exists that will take the hard work out of fixing your missing Oleacc.dll file problem called Auslogics.

The Auslogics suite of programs can keep your computer ticking by and ensure that the drivers and DLL files remain in working order.


See more information about Outbyte and uninstall instructions. Please review the Outbyte EULA and Privacy Policy

Click "Download Solution" to get the PC tool that comes with Oleacc.dll. The utility will automatically determine missing dlls and offer to install them automatically. Being an easy-to-use utility, it is a great alternative to manual installation, which has been recognized by many computer experts and computer magazines. Limitations: trial version offers an unlimited number of scans, backup, restore of your windows registry for FREE. Full version must be purchased.

It supports such operating systems as Windows 10, Windows 8 / 8.1, Windows 7 and Windows Vista (64/32 bit). File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

Method 3: (Semi-Auto) Use the system checker built-in admin tool to find a fix

Those familiar with the Windows operating system will know of the sfc/scannow file integrity check for important files.

You can run this tool by doing the following:

  • Start by launching the command line as an administrator (right-click to find the option) that you find in the search field using the keywords “command prompt”.
  • In the newly launched window enter “sfc / scannow” without the quotes and hit the enter key to run the command.
  • Now the program should launch and start working without any further input.
  • You will know when the program has finished running and has been successful when a dialog appears saying “Windows Resource Protection found corrupt files and successfully repaired them.”.

Hopefully, the system checker will notice that the Oleacc.dll file is missing and automatically fix it for you.

Method 4: (Anti-Virus) Install a new anti-virus and see if that can find and fix the problem

If you have been using your computer for a while and noticed that the Oleacc.dll file has disappeared randomly while it has worked before then this can be a sign of malware.

A malicious piece of software could have deleted it in order to cause mayhem or maybe to hold you ransom for a payment to fix it.

The simplest fix would be for you to use the anti-virus built into the operating system called Windows Defender.

Method 5: (Restore) Restore your system to a time before the problems began

Like rolling back the clock and traveling back in time, the System Restore process built into various Windows versions allows you to roll your computer back to a time when it worked fully.

This is useful if you have problems such as a missing Oleacc.dll file on your system and don’t know how it was lost.

You can attempt this yourself very easily by doing the following:

  • Open the Start menu and launch the “Run” program by searching for it.
  • With the “Run” program waiting for a command enter “rstrui” without the quotes and hit enter to open the system recovery tool.
  • With the system recovery tool open you can choose a restore point to roll back to when you believe the computer was safe and worked fully.

Now when you fire your computer up again you will be able to find out if you went far back enough to when the Oleacc.dll error did not appear.

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