What is gth.dll?

The genuine gth.dll file is a software component of Google Toolbar by Google.
Gth.dll is a DLL (Dynamic Link Library) file that belongs to the Google Toolbar, a browser addon for Internet Explorer and Firefox that provides a search box powered by Google Search and various other tools. This file runs a process that provides notifications in the taskbar. DLL files store data, code and resources needed by one or more programs in order to function correctly. This file is a Browser Helper Object (BHO) that adds program functionality to Microsoft's Internet Explorer and other Internet browsers. This is not a critical Windows component and should be removed if known to cause problems. The Google Toolbar is a browser addon that integrates the Google search engine directly into non-Google browsers to make searching faster and easier. The toolbar comes integrated with Google+ functionality making it easy to share things directly from the toolbar. The toolbar can also translate pages with a single click, bookmark websites, find specific words in a page, highlight search terms and more. Google was founded in 1998 by Larry Page and Sergey Brin, Ph.D. students at Stanford. Google has since grown into one of the biggest companies in the world, offering hundreds of services, including webmail (Gmail), cloud storage (Google Drive), office software (Google Docs) and social networking services (Google+). Alexa, which provides web traffic data, lists Google as the world's most visited website. Its popularity has led to huge media coverage, including a major critique of the company over copyright, censorship, and privacy issues. Google is headquartered in Googleplex, Mountain View, California, USA.

GTH stands for Google Toolbar Notifier Hook

Gth.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if gth.dll is a Windows system file or if it belongs to an application that you can trust.

Click to Run a Free Scan for gth.dll related errors

Gth.dll file information

The process known as GoogleToolbarNotifier belongs to software GoogleToolbarNotifier by Google (

Description: Gth.dll is not essential for the Windows OS and causes relatively few problems. Gth.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 10,736 bytes (62% of all occurrences), 49,136 bytes or 49,208 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program is not visible. Gth.dll is a Verisign signed file. The gth.dll file is certified by a trustworthy company. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. The gth.dll file is not a Windows system file. Therefore the technical security rating is 48% dangerous.

Recommended: Identify gth.dll related errors

Important: Some malware camouflages itself as gth.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the gth.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving gth issues

A clean and tidy computer is the key requirement for avoiding problems with gth. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the gth.dll process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

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