What is msddx.dll?

Msddx.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if msddx.dll is a Windows system file or if it belongs to an application that you can trust.

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Msddx.dll file information

The process known as IEXPLORE belongs to software IEXPLORE by unknown.

Description: Msddx.dll is not essential for the Windows OS and causes relatively few problems. Msddx.dll is located in the C:\Windows folder. Known file sizes on Windows 10/8/7/XP are 172,032 bytes (60% of all occurrences) or 180,224 bytes. 
The program has a visible window. There is no file information. The program is loaded during the Windows boot process (see Registry key: ShellServiceObjectDelayLoad). The msddx.dll file is not a Windows system file. Therefore the technical security rating is 32% dangerous.

Recommended: Identify msddx.dll related errors

Important: Some malware camouflages itself as msddx.dll, for example TROJ_FAKE.U (detected by TrendMicro), and (detected by Kaspersky). Therefore, you should check the msddx.dll 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.


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Best practices for resolving msddx issues

A clean and tidy computer is the key requirement for avoiding problems with msddx. 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 msddx.dll 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.

Other processes

msddx.dll [all]