Some anti-malware programs classify Toolbar.dll as a harmful extension to Internet Explorer: such as GRAY_Gen.MC54S5 (detected by TrendMicro), and not-a-virus:AdWare.Win32.ISearch.a or not-a-virus:AdWare.Win32.Mostofate.kh (detected by Kaspersky). Add-ons like this can display ads, slow down your computer and cause various other errors. If you can't remember installing the associated FreeCause Toolbar software, it's no surprise. In most cases, this kind of adware is installed on the side when you install a freeware product like a Youtube Downloader or a PDF Converter. In the following selection, you can read more about FreeCause Toolbar and how to get rid of it.
The process known as FreeCause Toolbar or IE Toolbar Engine or Internet Explorer Toolba or IE Toolbar
belongs to software AddThis Toolbar or Dogpile Bundle Toolbar or ToolbarBrowser or Gamers Unite! Snag Bar or SocialRibbons (version LP 1, LP2, LP5, LP4) or FreeCause Toolbar or Dogpile Toolbar or BucksBee Loyalty Plugin - Softonic or Nectar Search Toolbar or InboxDollars or IE Toolbar or BucksBee Loyalty Plugin - OpenInstall or MyPoints Point Finder or IE Toolba or Shopping4Causes Shopping Plugin or Webs Credits (version 2) or MyPoints Toolbar or Slownik LING or Pink Ribbon Toolbar or IBM Toolbar or CoolChaser Toolbar or MouseHunt Toolbar or Gaia Online Toolbar or AIR MILES TOOLBAR
by ToolbarBrowser.com or Velocity Services or IE Toolbar (www.debugbar.com) or Savings Apps or TENCENT (www.tencent.com).
Description: Toolbar.dll is not essential for Windows and will often cause problems. The file Toolbar.dll is located in a subfolder of "C:\Program Files" (e.g. C:\Program Files\aol toolbar\ or C:\Program Files\TrustyHound-TB\).
Known file sizes on Windows 10/8/7/XP are 1,624,576 bytes (7% of all occurrences), 487,424 bytes and 67 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 1A0AADCD-3A72-4b5f-900F-E3BB5A838E2A or CD292324-974F-4224-D074-CACA427AA030 or 65 more variants. The program is not visible. It is not a Windows core file. It is able to monitor web browsers. There is no description of the program. Toolbar.dll is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 56% dangerous; however you should also read the user reviews.
Recommended: Identify Toolbar.dll related errors
If Toolbar.dll is located in a subfolder of the user's profile folder, the security rating is 62% dangerous. The file size is 2,310,144 bytes (33% of all occurrences), 1,567,744 bytes or 722,288 bytes. The program is not visible. It is not a Windows core file. There is no description of the program. Toolbar.dll is able to change the behavior of, or monitor Internet Explorer. Toolbar.dll is able to record keyboard and mouse inputs and monitor applications.
If Toolbar.dll is located in the C:\Windows\System32 folder, the security rating is 72% dangerous. The file size is 409,600 bytes. The program is not visible. There is no detailed description of this service. Toolbar.dll is not a Windows core file. Toolbar.dll is located in the Windows folder, but it is not a Windows core file. Toolbar.dll is able to monitor web browsers. Toolbar.dll is able to record keyboard and mouse inputs.
External information from Tony Klein:
Important: Some malware also uses the file name Toolbar.dll, for example GRAY_Gen.MC54S5 (detected by TrendMicro), and not-a-virus:AdWare.Win32.ISearch.a or not-a-virus:AdWare.Win32.Mostofate.kh (detected by Kaspersky). Therefore, you should check the Toolbar.dll process on your PC to see if it is a threat. If FreeCause 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 Toolbar process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the Toolbar.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.