What is wzshlstb.dll?

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

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Wzshlstb.dll file information

The process known as WinZip Shell Extension DLL belongs to software WinZip or Mozilla Thunderbird or WinZip 10 Pro or WinRAR archiver by WinZip Computing ( or WinZip Computing LP ( or WinZip Computing, S.L.

Description: Wzshlstb.dll is not essential for the Windows OS and causes relatively few problems. Wzshlstb.dll is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\ or in a subfolder of the user's "Documents" folder—generally C:\Program Files\WINZIP\. Known file sizes on Windows 10/8/7/XP are 5,120 bytes (56% of all occurrences), 20,552 bytes and 10 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. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. The file is not a Windows core file. wzshlstb.dll appears to be a compressed file. Therefore the technical security rating is 64% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you still experience problems with wzshlstb.dll, you could also do the following:
  1) uninstall WinZip from your computer using the Control Panel applet Uninstall a Program
  2) consult Winzip’s Customer Service
  3) search for an update on the vendor’s website.

Recommended: Identify wzshlstb.dll related errors

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

it is not dangerous
  Billy Geer  
It can't be deleted :(
  Mr Big   (further information)
Part of Winzip
win zip extention harmless
  newbie hacker  
I can't delete it. It says "access is denied".
WinZip Shell Extension. Part of WinZip, shows the Zip-related context menu that comes up when you right-click a file. Can be turned off in WinZip options if desired.
  Bob Gurch  
Explorer enhancements(including additional Drag and Drop features. Can be turned off through the winzip program. Click on 'options - configuration then click the Explorer Enhancements tab. Uncheck Enable Explorer Enhancements at the very bottom.
Required .DLL for WinZip
  Averil "Smiles"  
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of wzshlstb.dll: based on 63 votes with 9 reviews. 42 users think wzshlstb.dll is essential for Windows or an installed application. 3 users think it's probably harmless. 10 users think it's neither essential nor dangerous. 2 users suspect danger. 6 users think wzshlstb.dll is dangerous and recommend removing it. 4 users don't grade wzshlstb.dll ("not sure about it").

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Best practices for resolving wzshlstb issues

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

wzshlstb.dll [all]