About Microsoft Download Warnings
Microsoft Defender SmartScreen may describe a DirtTwister utility as an “unrecognized app” because the file has not built enough reputation in Microsoft's system.
DirtTwister provides free, specialized utilities for older motocross games. These files have a much smaller audience than commercial software, and updated versions may be treated as completely new files. As a result, Windows may warn about a legitimate download simply because it has not been downloaded often enough.
Microsoft uses both the reputation of a software publisher and the download history of a specific file. A new or low-volume program can display a warning even when it is properly signed. Unsigned programs must build a new reputation with every release. Code-signing services cost money and do not guarantee that Microsoft will immediately recognize a program, so DirtTwister does not require its free utilities to participate in that system.
Before You Continue
Only bypass a warning when all of the following are true:
- You intentionally downloaded the utility.
- You downloaded it directly from the DirtTwister website.
- The file name matches the download you selected.
Do not bypass a warning for an unexpected file, an email attachment, or a copy obtained from an unknown website. You can also scan the file with your installed security software before opening it.
Running a DirtTwister Utility
- Open the file you downloaded.
- When Windows displays “Windows protected your PC”, click More info.
- Check that the application and file name are the DirtTwister utility you intended to download.
- Click Run anyway.
The wording and buttons may vary slightly between Windows versions. The illustrated CryptoSys guide to the “unrecognized app” warning shows the typical More info and Run anyway screens.
If Run anyway is not available, a Windows security setting or an organization’s policy may be preventing the file from running. DirtTwister does not recommend disabling Windows security globally. On a managed computer, contact the administrator responsible for the device.
Microsoft's Official Explanation
For Microsoft's description of file reputation, signing certificates, and why new downloads can be flagged, see SmartScreen reputation for Windows app developers.