Threat Modeling Tool update release 7.3.20927.9 - 09/27/2022
Version 7.3.20927.9 of the Microsoft Threat Modeling Tool (TMT) was released on September 27 2022 and contains the following changes:
- Accessibility improvements
- Security fixes
Errors related to TMT7.application file deserialization
Some customers have reported receiving the following error message when downloading the Threat Modeling Tool:
The threat model file '$PATH\TMT7.application' could not be deserialized. File is not an actual threat model or the threat model may be corrupted.
This error occurs because some browsers do not natively support ClickOnce installation. In those cases the ClickOnce application file is downloaded to the user's hard drive.
This error will continue to appear if the Threat Modeling Tool is launched by double-clicking on the TMT7.application file. However, after bypassing the error the tool will function normally. Rather than launching the Threat Modeling Tool by double-clicking the TMT7.application file, users should utilize shortcuts created in the Windows Menu during the installation to start the Threat Modeling Tool.
- Supported Operating Systems
- .NET Version Required
- .NET 4.7.1 or later
- Additional Requirements
- An Internet connection is required to receive updates to the tool as well as templates.
Documentation and feedback
- Documentation for the Threat Modeling Tool is located on docs.microsoft.com, and includes information about using the tool.
Download the latest version of the Microsoft Threat Modeling Tool.