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Danger level 7
Type: Adware
Common infection symptoms:
  • Connects to the internet without permission
  • Shows commercial adverts
  • Annoying Pop-up's


Have you stumbled across TBHostSupport.dll? Do you know anything about this file? Do you know which program it belongs to? Our malware researchers have discovered that the dynamic link library component belongs to the Conduit Search and Toolbar, and if you wish to delete these, you will need to remove the file as well. Unfortunately, this is not that easy, and many computer users report that they are struggling with the task. Besides supporting the activity you are most likely unhappy about, the disturbing DLL might be the cause of the irritating pop-up notifications. You may be able to stop these if you remove TBHostSupport.dll and get rid of the unreliable Conduit software successfully.

TBHostSupport.dll can be installed onto the computer in different locations and its size may wary; however, in most cases, computer users find it under %LOCALAPPDATA%\TBHostSupport\, and the file is as big as 458016 or 480032 bytes. Since the component has an autorun, it starts running as soon as the computer is booted up. If you have removed Conduit software already, you may be presented with pop-up alerts informing you that TBHostSupport.dll loading has failed as soon as the PC is booted up. Even though you could face a few different versions of the notification, here is one of the possible examples.

RUNDLL – Error loading c:\users\%USERNAME%\appdata\local\tbhostsupport\TBHostSupport.dll.
The specified module could not be found.

If you have not deleted Conduit software yet, it is unlikely that you have been faced by the suspicious pop-up notifications. Nonetheless, we certainly do recommend that you remove Conduit community toolbars and the potentially undesirable search tools which may have been installed. ConnectSo Toolbar, Quizulous Toolbar, Guffins Toolbar, and tens (if not hundreds) of other Conduit applications are considered to be unreliable and potentially undesirable because they have been developed to promote third party tools and programs. These toolbars always come bundled with the Conduit search tools, and these could be installed onto Google Chrome, Internet Explorer and Mozilla Firefox browsers without much of your notice.

If pop-up notifications related to TBHostSupport.dll have started flooding the desktop, it is likely that you have left out components related to the removed Conduit software. You can go through the manual removal guides below to check if you have deleted all undesirable software. Then you can install automatic malware removal software to make sure that all undesirable programs are deleted and no registry errors interrupt your daily tasks. Click the download button below to acquire a reliable malware remover which will ensure that all threats are eliminated.

Remove undesirable programs

Remove from Windows XP:

  1. Click Start on the Task Bar and now select Control Panel.
  2. Double-click Add or Remove Programs, click the undesirable one and select Remove.

Remove from Windows Vista or Windows 7:

  1. Navigate to the left of the Task Bar, click Start and select Control Panel.
  2. Click Uninstall a program and right-click the undesirable one.
  3. Select Uninstall to delete it from the PC.

Remove from Windows 8:

  1. Right-click on the Metro UI screen and select All apps to open the Apps menu.
  2. Now click Control Panel and move to Uninstall the program.
  3. Find the program you wish to delete, right-click it and select Uninstall.

Delete undesirable search tools

Delete from Google Chrome:

  1. Open Chrome, simultaneously tap Alt+F and select Settings.
  2. Under On Startup select Open a specific page or set of pages.
  3. Click Set pages and change/remove the undesirable search provider.
  4. Go to Appearance and mark Show Home button option.
  5. Click Change and change/remove the undesirable search provider.
  6. Move to Search and click Manage search engines.
  7. Firstly choose a new default search provider and then remove (click X) the undesirable one.

Delete from Internet Explorer:

  1. Open IE, simultaneously tap keys Alt+T and select Internet Options.
  2. Click the General tab, change/remove the Home Page URL and click OK.
  3. Tap Alt+T once more and select Manage Add-ons.
  4. Go to Search Providers and Remove the undesirable option. Click Close.

Delete from Mozilla Firefox:

  1. Open Firefox, move to the Firefox search box on the right and click the search provider icon.
  2. Select Manage Search Engines and Remove the undesirable option. Click OK.
  3. Simultaneously tap keys Alt+T to open the Tools menu at the top and select Options.
  4. Click the General tab, change/remove the Home Page URL and click OK.
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