Lhaplus installation procedure

SCRAP-2 2017-12-29 更新日

2026-04-27

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A vulnerability has been found in "UnACEv2.dll," which is included with Lhaplus. The current version of Lhaplus, v1.74 (May 3, 2017), does not address this vulnerability.

Mado no Mori (a Japanese software distribution site) has issued a warning against using Lhaplus to decompress ACE format files.

Furthermore, according to Wikipedia, the UnACEv2.dll library has not been updated since 2005, and using this DLL carries risks.

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I write down the archiver (compression decompression software), which does not need to install external DLL, Lhaplus installation procedure.

Because Lhaplus is designed to enhance convenience by associating with the corresponding extension (.ZIP | .CAB etc.), if you have ZIP folder standard function of Windows Explorer or commonly used archiver software, install it I think that it is better not to associate when doing.

It can be set to select a save destination when decompressing archive file or compressing it.

Since this post focuses on the installation procedure of Lhaplus, if you are looking for information such as corresponding extensions please see the article on the next link.

Official site

HoeHoe.com

Download file

lpls174.exe

Installation procedure

1. Double-click lpls174.exe to start the installer

2. Click "Yes" on the user account control screen

3. Information

Click "Next" to proceed with setup.

4. Specify the installation destination

Click "Install" to continue the installation, "Return" to confirm or change the settings.

C:\Program Files (x86)\Lhaplus

5. Ready to install

Click "Install" to continue the installation, "Return" to confirm or change the settings.

6. Completing the Lhaplus Setup Wizard

7. Lhaplus shell initial setting

It is the initial setting screen.

Since this screen can be displayed after installation, you can choose OK with default settings (that is, leave nothing changed).

As mentioned earlier, if you want to prioritize the ZIP folder function included with Windows 10, we recommend that you uncheck the extension. Zip /. Lzh.

The following setting items are available.

Shortcut
Association (decompression)
Context menu
Drag and drop menu
Compression submenu item

8. Restart

You may not be asked to restart if you do not add the Lhaplus specific command to the context menu.

In order to complete the installation of the application, you need to restart Windows. Are you sure you want to restart?

Software information

Lhaplus 1.74, 2017/05/03, Copyright (c) 2000-2017 Schezo
http://hoehoe.com/

Quoted from ReadMe.txt

Lhaplus (reading "Laplace") is one of decompression and compression software called archiver.
Although it enters a relatively high function class, it can be used directly from the installation right as it is, and there is also a setting screen with few items for beginners, so it is also recommended software for those who are not familiar with PC.

There is no need to introduce an external DLL for decompression and compression
It corresponds to many archive formats
It corresponds to various compression and decompression operations, and it can do work intuitively and efficiently
You can change the behavior and display settings according to the user's preferences
It has functions to support tasks associated with archive operations such as archive conversion and ZIP password search