Solidworks Host File Block ((free)) Jun 2026

: Preventing the software from checking for updates in the middle of a critical project to avoid unexpected version mismatches.

Follow these steps to manually add your server and restore your SOLIDWORKS connection: Solidworks Host File Block

If you are maintaining an old version of SolidWorks (2019 or earlier) on an air-gapped (offline) machine, the hosts file block is technically valid. However, treat your hosts file as a sacred system file. Backup the original before editing, and sanitize any Patch.exe you download in a virtual machine first. : Preventing the software from checking for updates

: Antivirus software (such as Webroot, ZoneAlarm, or SentinelOne) may actively block any application from writing to the hosts file. You must uncheck settings like "Prevent any program from modifying the HOSTs file" in your security software. Read-Only Attribute : Right-click the hosts file, select Properties , and ensure the box is unchecked. Administrative Permissions Backup the original before editing, and sanitize any Patch