Most antivirus programs classify wga.dll as a harmful extension to Internet Explorer: for instance Trojan-Spy.Win32.Delf.cqd (detected by F-Secure), and Win32:Delf-DYU (detected by Avast). Add-ons like this can display ads, slow down your computer and cause various other errors. If you can't remember installing the associated wga.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 wga.dll and how to get rid of it.
At the present time, we have no confirmed details about the software with which wga.dll is associated.
Description: Wga.dll is not essential for Windows and will often cause problems. The wga.dll file is located in the C:\Windows\System32 folder or sometimes in a subfolder of C:\Windows.
The file size on Windows 10/8/7/XP is 156,160 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 81A35F39-4850-474E-92C9-B4CF283207E0. There is no description of the program. The program has no visible window. The wga.dll file is located in the Windows folder, but it is not a Windows core file. Wga.dll is able to monitor web browsers. The service has no detailed description. The wga.dll file is not a Windows system file. Wga.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 92% dangerous; however you should also read the user reviews.
Recommended: Identify wga.dll related errors
External information from Tony Klein:
Important: You should check the wga.dll process on your PC to see if it is a threat. If wga.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: Security Task Manager examines the active wga process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the wga.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.