What is a9srchas.dll?

The genuine a9srchas.dll file is a software component of Ask Search Assistant by
A9srchas.dll is a DLL (Dynamic Link Library) file that belongs to Ask Search Assistant, an adware program usually installed through free programs downloaded from the Internet. DLL files store data, code and resources needed by one or more programs in order to function correctly. This is not an essential process for Windows and can be disabled if known to create problems. Ask Search Assistant helps users search for content on the Internet but displays sponsored links and advertising. The program also collects leads (user details such as email addresses) for sponsorers and is specifically designed to generate money. The program is not regarded as a virus but displays many malicious traits such as hijacking browsers and being unable to easily remove. It is categorized as a PUP (potentially unwanted program). is an American Internet company that offers a question answering-focused service and web search engine. The company has been criticised for misleading users into installing its browser toolbar that comes bundled with legitimate software, especially since the program is difficult to remove. was founded in 1996 and is currenly headquartered in Oakland, California, United States.

A9SrchAs stands for (version 9.0) Search Assistant Dynamic Link Library

A9srchas.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 Search Assistant.

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A9srchas.dll file information

The process known as Search Assistant belongs to software Ask Search Assistant by (

Description: A9srchas.dll is not essential for the Windows OS and causes relatively few problems. A9srchas.dll is located in a subfolder of "C:\Program Files". The file size on Windows 10/8/7/XP is 61,440 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 0A94B111-4504-4e26-AB05-E61E474AA38B. The program has no visible window. A9srchas.dll is able to monitor web browsers. A9srchas.dll is not a Windows system file. Therefore the technical security rating is 56% dangerous.

Recommended: Identify a9srchas.dll related errors

Important: Some malware camouflages itself as a9srchas.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the a9srchas.dll process on your PC to see if it is a threat. If Search Assistant 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.


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Best practices for resolving a9srchas issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active a9srchas process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the a9srchas.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

a9srchas.dll [all]