Most antivirus programs identify inetsrv.exe as malware—for example TrendMicro identifies it as WORM_SMALL.BIX or WORM_RESIK.A, and Microsoft identifies it as Worm:Win32/Small or Worm:Win32/Small!69D0.
The inetsrv.exe file is a software component of Internet Information Services by Microsoft. inetsrv.exe is an application for Internet Information Services in Windows XP. It interfaces IIS with the internet connection, allowing it to communicate with the web server. It has been released with every version of Windows except Windows XP Home. Although it is a valid file, it should be noted that many malware products disguise themselves as inetsrv.exe.
InetSrv stands for Internet Server
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The inetsrv.exe process does not give any clues as to the producer or the name of the associated software; instead, only the following file properties can be determined.
Description: Inetsrv.exe is not essential for Windows and will often cause problems. The inetsrv.exe file is located in the C:\Windows\System32 folder.
Known file sizes on Windows 8/7/XP are 24,576 bytes (63% of all occurrences), 45,056 bytes, 24,835 bytes or 40,960 bytes.
The program has no file description. It is not a Windows core file. The program has no visible window. The file is an unknown file in the Windows folder. The program starts when Windows starts (see Registry key: MACHINE\Run). Therefore the technical security rating is 78% dangerous, however you should also read the user reviews.
Recommended: Identify inetsrv.exe related errors
If inetsrv.exe is located in a subfolder of C:\Windows\System32, the security rating is 86% dangerous. The file size is 241,664 bytes. It is a file with no information about its developer. The program is not visible. It is an unknown file in the Windows folder. It is not a Windows core file. The process listens for or sends data on open ports to a LAN or the Internet.
Important: You should check the inetsrv.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 inetsrv. 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 doing a repair of your installation, or in the case of Windows 8, 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 inetsrv.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.