Most antivirus programs classify win32extension.dll as a harmful extension to Internet Explorer: for example Rogue:Win32/FakeXPA or Trojan:Win32/Yektel.A (detected by Microsoft), and Trojan.FakeAV!gen24 or Trojan Horse (detected by Symantec). Add-ons like this can display ads, slow down your computer and cause various other errors. If you can't remember installing the associated win32extension.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 win32extension.dll and how to get rid of it.
The process win32extension.dll has no data about its author.
Description: Win32extension.dll is not essential for Windows and will often cause problems. Win32extension.dll is located in the C:\Windows\System32 folder.
Known file sizes on Windows 10/8/7/XP are 633,856 bytes (10% of all occurrences), 665,088 bytes and 8 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 35A5B43B-CB8A-49CA-A9F4-D3B308D2E3CC or 60242C4F-F730-44B0-8440-F59C489C0219 or 5 more variants. There is no information about the author of the file. The program is not visible. The win32extension.dll file is an unknown file in the Windows folder. Win32extension.dll is able to monitor web browsers. There is no detailed description of this service. Win32extension.dll is not a Windows system file. Win32extension.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 92% dangerous.
Recommended: Identify win32extension.dll related errors
Important: You should check the win32extension.dll process on your PC to see if it is a threat. If win32extension.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 ▾
The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active win32extension process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the win32extension.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.