What is BCShExt.dll?

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

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BCShExt.dll file information

The process known as BestCryp Shell Extension DLL or BestCrypt Shell Extension DLL belongs to software BestCrypt SHELLEXT Dynamic Link Library by Jetico (

Description: BCShExt.dll is not essential for the Windows OS and causes relatively few problems. BCShExt.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 539,648 bytes (30% of all occurrences), 593,408 bytes and 5 more variants. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program has no visible window. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. BCShExt.dll is not a Windows system file. Therefore the technical security rating is 53% dangerous, however you should also read the user reviews.

Recommended: Identify BCShExt.dll related errors

If BCShExt.dll is located in the C:\Windows\System32 folder, the security rating is 66% dangerous. The file size is 503,808 bytes (20% of all occurrences), 78,848 bytes, 102,400 bytes, 512,000 bytes or 81,920 bytes. The program is not visible. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. BCShExt.dll is not a Windows system file.

Important: Some malware camouflages itself as BCShExt.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the BCShExt.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

dll needed by BCWipe - designed to securely delete files from the disk.
  Redleg18   (further information)
Used by BCWipe. No worries.
Most definitely used by Jetico's BCWipe... No worries at all, unless you only want to use the windows' Shift+Del function... Or, if you haven't installed BCWipe, in which case you may have something, or someone, to worry about ;-)
  Eric Provost   (further information)

Summary: Average user rating of BCShExt.dll: based on 5 votes with 3 user comments. 4 users think BCShExt.dll is essential for Windows or an installed application. One user thinks it's probably harmless.

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Best practices for resolving BCShExt issues

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

BCShExt.dll [all]