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

What is YTSingleInstance.dll?

YTSingleInstance.dll is an DLL file which belongs to the process Yahoo! Single Instance for Mail which comes with the Software Yahoo! Single Instance for Mail developed by the software developer Yahoo!.

The .dll extension of the YTSingleInstance.dll file specifies 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. I have faced these DLL corrupt or malware issues many times.

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

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

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

File Location / Danger rating: C:Program Files (x86)Yahoo!CompanionInstallscpn

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 YTSingleInstance.dll process if it says “Unable to verify” then the file may be a virus.

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 YTSingleInstance.dll Errors

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

If the system restores 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 YTSingleInstance.dll

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

1. If the DLL file is part of a software program or game, then it will also have an uninstall option. Then you can run the Uninstaller located a directory like C:>Yahoo!>Yahoo! Single Instance for Mail orYahoo! Single Instance for Mail >YTSingleInstance.dll_uninstall.dll
2. Or the YTSingleInstance.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 YTSingleInstance.dll or the software name Yahoo! Single Instance for Mail in the search bar or try out the developer name Yahoo!.
4. Then click on it and select the Uninstall Program option to remove YTSingleInstance.dll file from your computer. Now the software Yahoo! Single Instance for Mail program along with the file YTSingleInstance.dll will be removed from your computer.

YTSingleInstance.dll DLL Frequently Asked Questions

How do I fix issues with YTSingleInstance.dll?

You can fix most of YTSingleInstance.dll issues by updating your drivers, uninstalling and reinstalling the software, disabling the YTSingleInstance.dll.dll service, or contacting Yahoo! Single Instance for Mail support for further assistance.

Can I remove YTSingleInstance.dll from my computer?

Yes, you can remove YTSingleInstance.dll dll file from your computer if you no longer need it. To do this, go to the Control Panel, select “Programs and Features,” and locate the Yahoo! Single Instance for Mail software. Right-click on the software and select “Uninstall.”

Does Yahoo! Single Instance for Mail software’s YTSingleInstance.dll file work on Mac computers?

No, YTSingleInstance.dll DLL file associated with Yahoo! Single Instance for Mail software is designed for Windows computers only. So, it does not work on Mac computers.

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

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

Gowtham V

He is the founder of howtodoninja.com and is an experienced tech writer and a cybersecurity enthusiast with a passion for exploring the latest technological advancements. He has 10 years of experience in writing comprehensive how-to guides, tutorials, and reviews on software, hardware, and internet services. With an interest in computer security, he strives to educate users by writing content on how to use technology, and how to also protect their smart devices and personal data from cyber threats. He currently uses a Windows computer, and a Macbook Pro, and tests hundreds of Android phones for writing his reviews and guides.