First Login

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Read this post from Dan. You may need to change the paths that say 2024, to be 2025:

Login in issue

127.0.0.1 is the loopback address, commonly referred to as “localhost.” It’s used to establish an IP connection to the same machine or computer being used by the end-user, which is typically for testing and development purposes. You can try: (a) Clear Cache and Cookies: Sometimes, clearing the browser cache and cookies can resolve the issue. This can be done through the browser settings. (b) Delete Login Session File: On MS Windows navigate to: %AppData%/SketchUp/SketchUp 2024/ and delete…

After you have found and deleted login_session.dat, try opening SketchUp again. For SketchUp to work, you do need to sign in from SketchUp. Opening your browser and signing into Trimble or SketchUp won’t help SketchUp to know that you are signed in. Click the Sign In button in the SketchUp welcome screen.