Solidworks Host File Block Fix New! May 2026

Fixing "SolidWorks host file block" issues typically involves unblocking the Windows hosts file from security software or manually editing it to resolve server connection problems. This common technical hurdle often prevents SolidWorks PDM or license managers from communicating with their servers. Common Causes for Host File Blocks

: Scroll to the bottom and add a new line for each server using the format: [IP Address] [Server Name] . Example: 192.168.1.100 MyPDMVaultServer Save and Close : Save the file. Do not add a .txt extension. solidworks host file block fix

: When a network cannot translate server hostnames to IP addresses, the system may need a manual override in the hosts file. Step 1: Unblock the Hosts File from Security Software Example: 192

: Navigate to Advanced Settings and uncheck "Lock Hosts File". Step 1: Unblock the Hosts File from Security

Before editing, ensure your security suite is not actively blocking access to C:\Windows\System32\drivers\etc\hosts .