What is pclecoinst.dll?

Pclecoinst.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 pclecoinst.dll is a Windows system file or if it belongs to an application that you can trust.

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Pclecoinst.dll file information

The process known as Pinnacle Systems CoInstaller belongs to software RUNDLL32.EXE by Pinnacle Systems (

Description: Pclecoinst.dll is not essential for Windows and will often cause problems. The file pclecoinst.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 81,920 bytes (80% of all occurrences) or 61,440 bytes. 
The program has a visible window. The file is a file with no information about its developer. The file is a Microsoft signed file. The process is loaded during the Windows boot process (see Registry key: MACHINE\Run). The pclecoinst.dll file is not a Windows core file. Therefore the technical security rating is 4% dangerous, however you should also read the user reviews.

Recommended: Identify pclecoinst.dll related errors

Important: Some malware disguises itself as pclecoinst.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the pclecoinst.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.


User Comments

Pinnacle Systems CoInstaller. Used by the pinnacle 700-USB device.
  Cade Bray  

Summary: Average user rating of pclecoinst.dll: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

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Best practices for resolving pclecoinst issues

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

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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the pclecoinst.dll process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

pclecoinst.dll [all]