{"id":7663,"date":"2018-01-12T07:00:05","date_gmt":"2018-01-12T15:00:05","guid":{"rendered":"https:\/\/www.autodesk.com/blogs\/autocad\/?p=7663"},"modified":"2025-12-02T13:24:44","modified_gmt":"2025-12-02T21:24:44","slug":"trusteddwg-exploring-features-benefits-autocad","status":"publish","type":"post","link":"https:\/\/www.autodesk.com/blogs\/autocad\/trusteddwg-exploring-features-benefits-autocad\/","title":{"rendered":"TrustedDWG: Exploring the Features and Benefits of AutoCAD"},"content":{"rendered":"

TrustedDWG is a key function of AutoCAD and AutoCAD LT that analyzes DWG files as they are being opened. The function checks to see if the DWG file was saved with an Autodesk product or by a software developer who is licensed to use the RealDWG toolkit. If the file does not pass the TrustedDWG analysis, it will inform you in various ways that the DWG file may not be compatible, nor guarantee its integrity when used with AutoCAD or AutoCAD LT. So, let\u2019s take a look at how to get the most out of this core benefit.<\/p>\n

How AutoCAD or AutoCAD LT Alerts You<\/h2>\n

The visibility of these warnings is controlled by the DWGCHECK system variable. DWGCHECK is an integer variable and is saved in the registry \u2014 not each drawing. By default, DWGCHECK is set to 1. There are 8 different states that can be set and which determine what type of alert is or isn\u2019t displayed. We\u2019ll be looking at the alerts that you\u2019ll see in the default setting of 1.<\/p>\n

First, upon opening a DWG file that was last saved from a non-Autodesk product, you\u2019ll get the following dialog box:<\/p>\n

\"AutoCAD<\/p>\n

You\u2019ll have the opportunity to open the file or to cancel. If you choose to check the \u201cAlways open DWG files\u201d option, it will not change the setting of DWGCHECK, but instead, will simply hide this dialog box. You can change this setting (or any hidden message) via the Settings tab in the Options dialog box.<\/p>\n

\"\"<\/a><\/p>\n

Additional Alerts<\/h2>\n

In addition to the alert message, the AutoCAD command line will also warn you of a non-compliant DWG file. While opening, one of the following messages will appear:<\/p>\n

\"AutoCAD<\/p>\n

The top message alerts you that the DWG file did not pass the TrustedDWG test. The bottom message will display if it finds that it was last saved by an Autodesk product.<\/p>\n

If you choose to open a .dwg file that did not pass TrustedDWG\u2122, you will also see a warning icon in the Status Bar of AutoCAD or AutoCAD LT. Hovering over the icon will display the warning seen below. It is yet another visual reminder to carefully check the contents of the .dwg file before saving, in order to ensure its integrity. Clicking on the icon will open this page in your default web browser.<\/p>\n

\"AutoCAD<\/p>\n

Trusted Files to Open on Web and Mobile with AutoCAD Web<\/strong><\/h2>\n

Do you have a DWG file you need to collaborate or review on the go and ensure its secure? AutoCAD Web<\/a> provides both web and mobile access to drawings. It’s a trusted solution for mechanical engineers, product designers, and manufacturing professionals with the core AutoCAD commands. AutoCAD Web enables trusted collaborators to communicate and stay up to date, mark up, and even perform light-touch editing. Learn more about AutoCAD Web<\/a>.<\/p>\n

More on TrustedDWG<\/h2>\n