The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the regsvr32.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
Description: Regsvr32.exe is an important part of Windows, but often causes problems. The regsvr32.exe file is located in the C:\Windows\System32 folder.
Known file sizes on Windows 10/8/7/XP are 14,848 bytes (38% of all occurrences), 11,776 bytes and 4 more variants.
It is a Microsoft signed file. The program is not visible. Therefore the technical security rating is 14% dangerous, however you should also read the user reviews.
Recommended: Identify regsvr32.exe related errors
If regsvr32.exe is located in a subfolder of C:\Windows, the security rating is 9% dangerous. The file size is 14,848 bytes (80% of all occurrences), 16,896 bytes, 17,408 bytes or 15,872 bytes. The file is a Microsoft signed file. The program has no visible window. Regsvr32.exe is able to monitor applications and manipulate other programs.
If regsvr32.exe is located in the C:\Windows folder, the security rating is 72% dangerous. The file size is 45,752 bytes (50% of all occurrences), 435,385 bytes or 266,424 bytes. The process has no file description. The program has no visible window. The file is located in the Windows folder, but it is not a Windows core file. Regsvr32.exe is not a Windows system file.
If regsvr32.exe is located in a subfolder of "C:\Program Files\Common Files", the security rating is 21% dangerous. The file size is 13,824 bytes.
External information from Paul Collins:
Important: Some malware disguises itself as regsvr32.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the regsvr32.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with regsvr32. 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.
To help you analyze the regsvr32.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.