How to remove the mysidesearch_sidebar.dll malware

Some anti-malware programs classify mysidesearch_sidebar.dll as a harmful extension to Internet Explorer: e.g. Trojan.Adclicker (detected by Symantec), and not-a-virus:AdWare.Win32.Agent.aoa or not-a-virus:AdWare.Win32.BHO.cdk (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 mysidesearch_sidebar.dll 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 mysidesearch_sidebar.dll and how to get rid of it.

Click here to automatically remove the mysidesearch_sidebar.dll malware

Mysidesearch_sidebar.dll file information

The process contains no information about the creator.

Description: Mysidesearch_sidebar.dll is not essential for Windows and will often cause problems. Mysidesearch_sidebar.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 335,872 bytes (36% of all occurrences), 339,968 bytes, 153,600 bytes or 333,824 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 1648E328-3E5A-4EA5-A9C6-E5F09EE272DA or DDFA1356-E6ED-42a5-9D62-93211D424A90 or C17E102B-BD29-4e92-B699-1A21D2CB8E6C or 9506910A-0F94-4ea1-B567-7070428B8B2B. There is no file information. The program is not visible. The file is an unknown file in the Windows folder. The mysidesearch_sidebar.dll file is able to change the behavior of, or monitor Internet Explorer. There is no detailed description of this service. It is not a Windows system file. Mysidesearch_sidebar.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 92% dangerous.

Recommended: Identify mysidesearch_sidebar.dll related errors

Important: Some malware also uses the file name mysidesearch_sidebar.dll, for example Trojan.Adclicker (detected by Symantec), and not-a-virus:AdWare.Win32.Agent.aoa or not-a-virus:AdWare.Win32.BHO.cdk (detected by Kaspersky). Therefore, you should check the mysidesearch_sidebar.dll process on your PC to see if it is a threat. If mysidesearch_sidebar.dll 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 mysidesearch_sidebar issues

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

mysidesearch_sidebar.dll [all]