What is mwssrcas.dll?

Mwssrcas.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 MyWebSearch Search Assistant.

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Mwssrcas.dll file information

The process known as MyWebSearch Search Assistant belongs to software MyWebSearch Search Assistant for Internet Explorer by (

Description: Mwssrcas.dll is not essential for Windows and will often cause problems. Mwssrcas.dll is located in a subfolder of "C:\Program Files (x86)"—generally C:\Program Files (x86)\MyWebSearch\bar\1.bin\ or C:\Program Files (x86)\MyWebSearch\SrchAstt\1.bin\. Known file sizes on Windows 10/8/7/XP are 54,704 bytes (28% of all occurrences), 58,800 bytes and 5 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 00A6FAF1-072E-44cf-8957-5838F569A31D. The program is not visible. The file is able to monitor web browsers. The mwssrcas.dll file is not a Windows core file. Mwssrcas.dll is digitally signed. The file is a Verisign signed file. Mwssrcas.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 42% dangerous; however you should also read the user reviews.

Uninstalling this variant: In the event of any problems with mwssrcas.dll, you could also do the following:
  1) uninstall the software My Web Search Bar using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program)
  2) look for help on the website.

Recommended: Identify mwssrcas.dll related errors

External information from Tony Klein:

Important: Some malware camouflages itself as mwssrcas.dll. Therefore, you should check the mwssrcas.dll process on your PC to see if it is a threat. If MyWebSearch 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.


User Comments

You get this on your computer by downloading from the site : smiley central. With this tool you can add smiley's and pictures to your e-mail
  Puts   (further information)
tracks usage and slows internet access with cookie monitoring
created to spy computers... by hackers for ppl who want illegal software, you cannot remove it although you uninstall it, it will still run. Format hard drive...
Seems useless. Not sure if harmful or not.
My web fun cards / smiley central - it seems to be causing internet explorer to crash, once i removed the whole package from add remove - internet explorer stopped crashing.
at random times, for about 15 or so minutes it continuosly crashes Windows Explorer and Internet Explorer, leaving no option but for you to have a backup plan. Download Opera or Firefox and Total Commander so that within those 15 minutes you can still work. Reformat hard-drive, it is dangerous.
  Darkest Event Horizon  
got an alert from Threatfire that it is potentially unwanted application. since i was in my bank account at the time what i want to know is if i quarantine this bad guy will it qwuartine my bank products on line. cuz i pay my bills there.
  Nancy R Cramer  
MyWebSearch Application Adware, Browser Hijacker
Threatfire warned during very long download from tom tom. Now worried my download will be terminated if I quarantine.
  Paul K.  

Rating chart

Summary: Average user rating of mwssrcas.dll: based on 10 votes with 9 user comments. 5 users think it's neither essential nor dangerous. 2 users suspect danger. 3 users think mwssrcas.dll is dangerous and recommend removing it.

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Best practices for resolving mwssrcas issues

The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active mwssrcas process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the mwssrcas.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 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

mwssrcas.dll [all]