What Is OneTab.dll? Is It A Virus Or Malware? How To Fix?

What is OneTab.dll?

OneTab.dll is an dll file which belongs to the process OneTAb Add-on which comes with the Software OneTAb developed by software developer OnPageAds

The .dll extension of the OneTab.dll file specifies that it is a Dynamic-link library file.

Malware and viruses are also transmitted through dll files. So we must be sure before opening any unknown dll file on our computers.

We will check if the OneTab.dll file is a virus or malware? Whether it should be deleted to keep your computer safe? Read more below.

Is OneTab.dll safe to run? Is it a virus or malware?

Let’s check the location of this dll file to determine whether this is a legit software or a virus. The location of this file is

File Location / Danger rating : C:UsersUSERNAMEApplication DataOneTab

To check whether the dll file is legit you can start the Task Manager. Then click on the columns field and add Verified Signer as one of the columns.

Now look at the Verified Signer value for OneTab.dll process if it says “Unable to verify” then the file may be a virus.

File Name OneTab.dll
Software Developer OnPageAds
File Type
File Location C:UsersUSERNAMEApplication DataOneTab
Software OneTAb


OneTab.dll is a Virus or Not : OneTab.dll is not a Virus or Malware

If the developer of the software is legitimate then it is not a virus or malware. If the developer is not listed or seems suspicious you can remove it using the uninstall program.


How to Fix OneTab.dll Errors

To fix missing OneTab.dll file you can perform a system restore to restore all missing dll files on your system.

If the system restore didn’t fix the dll issue then you can run System File Checker to fix corrupt dll files on your Windows system.

How To Remove or Uninstall OneTab.dll

To remove OneTab.dll from your computer do the following steps one by one.

  1. If the dll file is a part of a software program or game then it will also have an uninstall option. Then you can run the uninstaller located at directory like C:>OnPageAds>OneTAb Add-on orOneTAb >OneTab.dll_uninstall.dll
  2. Or the OneTab.dll was installed using the Windows Installer then to uninstall it Go to System Settings and open Add Or Remove Programs Option.
  3. Then Search for OneTab.dll or the software name OneTAb in the search bar or try out the developer name OnPageAds.
  4. Then click on it and select the Uninstall Program option to remove OneTab.dll file from your computer. Now the software OneTAb program along with the file OneTab.dll will be removed from your computer.

I hope you were able to learn more about the OneTab.dll file and how to remove it.

Let us know in the comments below if you face any other OneTab.dll issues.

About The Author: Gowtham V is a tech blogger and founder of HowToDoNinja.com who is an expert in Technology & Software and writes awesome How-To Tutorials to help people online. He has 5 years of experience in creating websites and writing content. He uses a Windows PC, a Macbook Pro, and an Android phone. Check out more about our website and our writers on our About US page. Also follow me on Twitter page and Linkedin

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