What is CSMBHO.dll?

CSMBHO.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 CSMBHO Module.

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

CSMBHO.dll file information

The process known as CSMBHO Module belongs to software AT&T WorldNet Service or CSMBHO Module by unknown.

Description: CSMBHO.dll is not essential for Windows and will often cause problems. The file CSMBHO.dll is located in a subfolder of "C:\Program Files". The file size on Windows 10/8/7/XP is 155,702 bytes. 
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 0F660F64-F4C9-477F-8529-44181B717472. CSMBHO.dll is a file with no information about its developer. The program has no visible window. The CSMBHO.dll file is able to monitor web browsers. The service has no detailed description. The file is not a Windows core file. You can uninstall this program in the Control Panel. CSMBHO.dll appears to be a compressed file. Therefore the technical security rating is 64% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you want to remove the program completely, go to Control Panel ⇒ Software ⇒ AT&TWorldNet Service or AT&T WorldNet Service.

Recommended: Identify CSMBHO.dll related errors

External information from Tony Klein:

Important: Some malware camouflages itself as CSMBHO.dll. Therefore, you should check the CSMBHO.dll process on your PC to see if it is a threat. If CSMBHO Module 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 ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


User Comments

Installed with AT&T client. Directs you to their search page
  bob T   (further information)

Summary: Average user rating of CSMBHO.dll: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

Do you have additional information? Help other users!
What do you know about CSMBHO.dll:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving CSMBHO issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active CSMBHO process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the CSMBHO.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.

Other processes

CSMBHO.dll [all]