This article aims to explain what is the ontology.dll malware error and explain how to check if it’s malicious and how to remove it.
If you are running a computer with an Nvidia GPU, chances are that your antivirus software has detected the process Ontology.dll as a Trojan horse. The Ontology.dll is a file, belonging to the drivers of the Nvidia GPUs, installed on Windows machines and Is generally classified as a false positive detection. However, many users also report that the file may be related to a malicious executable file which may attack the driver of you GPU. This is why, we recommend that you read the following article and secure your computer n case Ontology.dll is a malicious file.
Threat Summary
Name | Ontology.dll |
Type | Either a Trojan or a False Positive detection. |
Short Description | If Trojan, attacks the graphics of your video card. If false positive, the .dll process is detected as malicious by some antivirus programs as a Trojan. |
Symptoms | Suspicious behavior of the .dll process. May display system errors, such as: “The procedure entry point CreateApplicationWrapper could not be located in the dynamic link library Ontology.dll”. |
Distribution Method | Spam Emails, Email Attachments, Executable files |
Detection Tool |
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User Experience | Join Our Forum to Discuss Ontology.dll. |
Ontology.dll Detection – How Did I Get It
In general, the Ontology.dll is a process which is a support file of the drivers of your Nvidia GPU. In most cases, the process is false-positive and it is installed along with the conventional installation of the video card drivers. The file contains instructions which assist the programs within the driver of the GPU to work properly.
If the Ontology.dll is a malicious file, which may be the case, if your computer has been infected with malware, there are several different methods by which this could have happened:
- If you open a suspicious e-mail attachment, causing the infection.
- If your computer has already been previously infected with malware.
- If you install a fake setup, execute a fake license activator, game crack or patch which is actually the payload dropper file of the Trojan, that may be related to Ontology.dll.
Ontology.dll – More Information
Ontology.dll is an important process which may be responsible for specifying the specific video card that you run on your computer. The process may also assist processes of the drivers to be executed by containing functions in it that assist the central executable files of the programs of your driver to operate. In general, if the process is the original one, it may not be malicious at all.
But, since this process is of importance to the functioning of the drivers, it can also be replaced with it’s analogue process, which is configured to serve the interests of malware, which may have infected your computer. Such malware may generally be:
- Mining Trojans which take system resources from your GPU (Video Card).span>
- Classic Trojan Horse that may steal information from your computer and make screenshots of your desktop.
- Botnet-related Trojan, aiming to connect your computer to a zombie network.
Whatever the case of Ontology.dll may be, it is safest to check your computer for malware and if detected to remove it immediately.
Remove Ontology.dll Malware and Secure Your PC
In order to check your computer for malware, you need to first located the Ontology.dll file, which is in the following directory:
→ C:\Users\”UserName”\AppData\Local\NVIDIA\NvBackend\ApplicationOntology
Then, you can use a detection website, like VirusTotal.com or ZipeZip.com to check if the file is malicious or no.
The best method to check if the Ontology.dll file is actually malware is to run a scan with an advanced antimalware program in order to establish if there is other malware, related to this file on your PC and secure it completely.
Automatically remove Ontology.dll by downloading an advanced anti-malware program
- Guide 1: How to Remove Ontology.dll from Windows.
- Guide 2: Get rid of Ontology.dll from Mac OS X.
- Guide 3: Remove Ontology.dll from Google Chrome.
- Guide 4: Erase Ontology.dll from Mozilla Firefox.
- Guide 5: Uninstall Ontology.dll from Microsoft Edge.
- Guide 6: Remove Ontology.dll from Safari.
- Guide 7: Eliminate Ontology.dll from Internet Explorer.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
How to Remove Ontology.dll from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Ontology.dll





Step 2: Uninstall Ontology.dll and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:



Step 3: Clean any registries, created by Ontology.dll on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by Ontology.dll there. This can happen by following the steps underneath:



Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Get rid of Ontology.dll from Mac OS X.
Step 1: Uninstall Ontology.dll and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove Ontology.dll via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents
/Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove Ontology.dll files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as Ontology.dll, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Remove Ontology.dll from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Erase Ontology.dll from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Uninstall Ontology.dll from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Remove Ontology.dll from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Ontology.dll will be removed.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Eliminate Ontology.dll from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.