Corrupt Microsoft Visual C++ Redistributable or insufficient temp space. Solution:

Autodesk no longer prominently hosts old updates on their main site, but they are available through:

While AutoCAD 2018 is not officially supported on Windows 11, many users report that the 2018.0.2 update installs and runs successfully in compatibility mode. However, Autodesk recommends using newer versions on Win11.

This is the most important section. These files can contain malware, ransomware, or corrupted executables that could destroy your system or steal your Autodesk credentials.

Before initiating the download, ensure your workstation meets the minimum system requirements to run AutoCAD 2018 with the 0.2 patch applied. Requirement Specification

The installer file corrupted during the download process.