What file is vlx

The file that AutoCAD software automatically runs by default. This file will be automatically executed whenever the directory where the drawings opened using ACAD software is located. It was once a common way for CAD secondary development software to automatically load.                                                                                                                                                                                                    (Recommended learning: phpstorm)

When the file exists in some acad working directory or acad program directory, the acad software will also be automatically loaded. Nowadays, except for a very small number of secondary development software, they are basically in the form of CAD viruses. Generally speaking, the virus will automatically execute along with the drawings and infect acad software and secondary development software, even causing the drawing information to be destroyed, with serious consequences.

This is not actually an AutoCAD file provided by Autodesk. When AutoCAD loads the acad.vlx malicious file, it corrupts the drawing, causing a "Missing Language Pack" dialog box to pop up when you save and reopen the drawing.

The acad.vlx file will create a copy under the Help folder (for example, C:\Program Files\AutoCAD 2010\Help\logo.gif). Multiple other files will also be modified, and the value of the ACADLSPASDOC system variable will be changed to 1, which will allow the acad.vlx file to be loaded into other open drawings, causing damage to the drawing.

The following cleaning process will detect and delete the acad.vlx file before AutoCAD attempts to load it, preventing the spread of viruses.

To avoid damage to other files

You must complete this process as a system administrator of the Microsoft Windows operating system.

In your product installation directory, locate the Support folder (for example, C:\Program Files\AutoCAD 2010\Support).

In the Support folder, double-click the acad20xx.lsp file (for example, the acad2010.lsp file). Add the following code to the file. AutoCAD will discover and delete the acad.vlx and logo.gif files.

(defun cleanvirus( / lspfiles lspfile x)
(setq lspfiles '("acad.vlx" "logo.gif"))
(foreach lspfile lspfiles
(while (setq x (findfile lspfile))
(progn
(vl-file-delete x)
(princ "\nDeleted file ")
(princ x)
);progn
);while
);foreach
)
(cleanvirus)

Open all the files below:

o C:\Program Files\AutoCAD 20xx\Express\acetauto.lsp
o C:\Program Files\AutoCAD 20xx\Support\ai_utils.lsp
o ROAMABLEROOTPREFIX\Support\acad.mnlo

Note: Replace ROAMABLEROOTPREFIX with the return value of the ROAMABLEROOTPREFIX system variable.

If the following code appears, please delete it:

(vl-file-copy(findfile(vl-list->string'(108 111 103 111 46 103 105 102)))(vl-list->string'(97 99 97 100 46 118 108 120)))

Save all files.

Note: There may not be the three files

o C:\Program Files\AutoCAD 20xx\Express\acetauto.lsp
o C:\Program Files\AutoCAD 20xx\Support\ai_utils.lsp

o ROAMABLEROOTPREFIX\Support\acad.mnlo in AutoCAD2004 or 2007. Don’t worry, just change the acad20xx.lsp file mentioned above. Can be solved.

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