This method is reliable because it blocks the specific application executable regardless of the domain it tries to reach. Super User Open Firewall Settings : Search for "Firewall" in your Start menu and select Windows Defender Firewall with Advanced Security Create Outbound Rule Outbound Rules from the left panel, then click
If the software still accesses online features, it may be using a newer domain name or an explicit IP address bypass. In this scenario, supplement your hosts file modifications by creating an outbound rule in your operating system's built-in firewall to block the SketchUp.exe application executable directly. If you want to ensure your setup is secure, tell me: Which version are you running? Which version of SketchUp are you configuring?
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The hosts file is a plain text system file that maps hostnames to IP addresses. When you enter a web address in your browser, your computer first checks this file to see if there's a manual entry before querying a DNS server. Think of it as a local phonebook that sits on your computer. block sketchup host file free
Hosting SketchUp files with Block SketchUp is easy and free. Here's a step-by-step guide to get you started:
After saving the hosts file, your operating system might still use older, cached network paths. Follow these quick maintenance steps to ensure the block is active. Flush Your DNS Cache
Because the Hosts file is a critical system file, you cannot edit it with normal permissions. This method is reliable because it blocks the
Blocking these domains will disable the 3D Warehouse , Extension Warehouse , and online license verification.
Here are a few methods to block SketchUp from accessing your host file, all of which are free:
Blocking SketchUp in your system's hosts file is a reliable, free way to prevent the software from connecting to the internet. This method stops automatic updates, telemetry data collection, and online license validation checkbacks without requiring expensive third-party firewall software. If you want to ensure your setup is
From a technical perspective, effectively blocking all license validation would require redirecting or blocking traffic to these specific ports and domains—something a simple hosts file modification alone cannot fully accomplish.
Disclaimer: Modifying your host file is a technical process. Ensure you only edit the necessary lines to avoid internet connectivity issues with other applications. If you'd like, I can: Show you (unblock).
How to Block SketchUp in Your Host File for Free (2026 Guide)