. Trial keys typically expire after 30 days, causing a license validation message to appear until a new valid key is registered. Common "Fixes" for Trial License Errors Platform & Version Alignment
You likely have multiple projects in your solution. The project that first loads a Syncfusion control must call RegisterLicense . For example, if your UI layer references a class library that uses Syncfusion, register the key in the UI layer's Main method. syncfusion trial license key fix
Clean and rebuild the solution to clear cached license warnings. syncfusion trial license key fix
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