Scroll to the very bottom of the document, paste the blocklist entries (provided below), and save the file ().
Paste the blocklist entries, then press to write the changes, followed by Ctrl + X to exit. The Complete AutoCAD Blocklist Entries
Modern AutoCAD versions (2023–2025) use to display in-app pop-ups and license warnings. Even with a host file block, these notifications may still appear if the underlying web service is active. autocad block host file patched
If your host file was clean, the "block/patched" error might be caused by other licensing service failures. A. Reset the Autodesk Licensing Service Navigate to C:\ProgramData\Autodesk\AdskLicensingService . Delete all files and folders in this directory. Restart your computer and launch AutoCAD. B. Update the AdskLicensing Service
Windows Defender, third-party antivirus programs, and advanced firewall solutions routinely scan the hosts file for unauthorized modifications. Security software often flags these edits as potential malware activity and automatically reverts the file to its default state. Scroll to the very bottom of the document,
2. File Management: Managing Block Files in a Network "Host"
Ensure that your security software is not blocking AdskLicensingAgent.exe or AdskLicensing.exe . Preventing Future Issues To ensure your AutoCAD installation remains stable: Even with a host file block, these notifications
The NLM method involves setting up a local network license manager that acts as a validation server. This approach requires editing the lic.dat license file, changing the HOSTNAME entry to match the user's computer name, and optionally modifying the MAC address in the file. Users must then configure AutoCAD to look for a license at localhost rather than Autodesk's official servers.
Are you managing a or an entire office network ?
: If the software detects that official domains are blocked or redirected in the hosts file, it flags the installation as compromised and displays the "patched" error [1]. Step-by-Step Guide to Fix the Error