The GT Title Designer is included with vMix (version 22 and higher), but it requires a valid license key to function. The error typically triggers because: Version Mismatch:
Are you using a license, or did this error start appearing after a software update ? GT Title Will not open - vMix Forums
If the application continues to fail, a complete reinstallation of vMix may be required to repair corrupted files, suggests a vMix Forum user vmix gt title designer license not found
There can be an instance where the configuration file of the application which is giving you the error is corrupted. In this case, vMix Forums Standalone GT Title Designer - vMix Forums
If you are on a paid HD, 4K, or Pro license and see "License Not Found," the problem is likely a or a driver conflict . The GT Title Designer is included with vMix
Ensure you are using the default GT templates that come with vMix to verify if the issue is with the software or a custom file, notes the GT Title Designer documentation Update vMix:
This Windows tool can repair corrupt system files that might be interfering with vMix. In this case, vMix Forums Standalone GT Title
The "vMix GT Title Designer license not found" error is notorious, but it is almost never a permanent hardware failure. In 90% of cases, the issue is a (fixable by running as Admin) or a missing C++ runtime (fixable by the all-in-one installer).
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