AutoCAD

How To Delete Lsp In AutoCAD?

Understanding LSP Files in AutoCAD

AutoCAD allows customization and automation through LISP (List Processing) files. These scripts enhance productivity by automating repetitive tasks within the software. However, users may find the need to delete certain LSP files that are no longer required in their AutoCAD environment.

Steps to Locate and Delete LSP Files in AutoCAD

Step 1: Open File Location

  1. Launch AutoCAD 2025.
  2. Navigate to the top left corner and click on the Application menu (the big "A" icon).
  3. Select "Options" from the dropdown menu to open the Options dialog box.

Step 2: Find Support File Search Path

  1. Once in the Options dialog, switch to the "Files" tab.
  2. Expand the "Support File Search Path" section. Here, you will see a list of directories that AutoCAD uses to search for LISP files.
  3. Locate the folder where your LSP files are stored, typically labeled as “LISP Files” or similar.

Step 3: Identify the LSP File

  1. Using Windows File Explorer, navigate to the identified folder.
  2. Browse the contents until you find the specific LSP file you wish to delete. Note the file name and ensure it is the correct file you intend to remove.

Step 4: Deleting the LSP File

  1. Once located, right-click the LSP file and select "Delete" from the context menu.
  2. A confirmation dialog may appear, asking if you are sure about the deletion. Confirm this action by clicking "Yes."
  3. The LSP file will now be permanently removed from the folder.

Unloading the LSP File from AutoCAD

To prevent AutoCAD from accessing the deleted LSP during your current session, follow these additional steps:

Step 5: Use the APPLOAD Command

  1. Type APPLOAD in the AutoCAD command line and press "Enter."
  2. In the Appload dialog, check if the deleted LSP file is listed.
  3. If it appears, select the file and click on the "Unload" button to remove it from the current session.

Additional Tips for Managing LSP Files

  • Regularly review your LSP files to keep your AutoCAD environment uncluttered.
  • Create backups of important LSP files before deletion, especially if you are uncertain about their use in future projects.
  • Maintain an organized folder structure for your LSP files for easier management.

FAQ

1. What happens if I delete an LSP file that is currently in use?
If you delete an LSP file that is currently loaded into AutoCAD, you may experience errors or unexpected behavior in your drawings. It is advisable to unload the file first before deleting it.

2. Can I restore a deleted LSP file?
Once an LSP file is deleted from your system, it is removed permanently unless you have backups or access to the recycling bin. Always keep backups of essential files to prevent data loss.

3. Are there any risks associated with using LSP files in AutoCAD?
While LSP files enhance functionality, using files from untrusted sources can introduce risks. Ensure that any LISP files you download are from reputable sources to avoid potential security vulnerabilities.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.