The genuine googletoolbar1.dll file is a software component of Google Toolbar by Google.
Googletoolbar1.dll is a DLL (Dynamic Link Library) file that belongs to Google Toolbar, a browser addon for Internet Explorer and Firefox that provides a search box powered by Google Search and various other tools. 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.
GoogleToolbar1 stands for Google IE Client Toolbar (version 1)
Googletoolbar1.dll is a browser extension for Internet Explorer. This add-on enables several additional functions for Internet Explorer. You can disable it through the Extras menu (key combination Alt + X) under Manage Add-ons. The following paragraph provides more information about Google IE Client Toolbar.
The process known as Google IE Client Toolbar or GoogleToolbar or Barre d'outils pour IE belongs to software Google Toolbar for IE or GoogleToolbar or Barre d'outils Google pour IE or ? IE Google by Google (toolbar.google.com) or Google.com.
Description: Googletoolbar1.dll is not essential for the Windows OS and causes relatively few problems. Googletoolbar1.dll is located in a subfolder of "C:\Program Files" (normally C:\Program Files\Google\).
Known file sizes on Windows 10/8/7/XP are 2,403,392 bytes (27% of all occurrences), 720,896 bytes and 38 more variants.
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include AA58ED58-01DD-4d91-8333-CF10577473F7. The program is not visible. Googletoolbar1.dll is able to change the behavior of, or monitor Internet Explorer. There is no detailed description of this service. The googletoolbar1.dll file is not a Windows core file. The process can be uninstalled in the Control Panel. It is certified by a trustworthy company. The file is a Verisign signed file. Googletoolbar1.dll is able to monitor applications and record keyboard and mouse inputs. Therefore the technical security rating is 42% dangerous, however you should also read the user reviews.
Recommended: Identify googletoolbar1.dll related errors
External information from Tony Klein:
Important: Some malware camouflages itself as googletoolbar1.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example not-a-virus:AdWare.Win32.Agent.pvo (detected by Kaspersky), and Mal_Naix-6 (detected by TrendMicro). Therefore, you should check the googletoolbar1.dll process on your PC to see if it is a threat. If Google IE Client Toolbar has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active googletoolbar1 process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the googletoolbar1.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. 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.