Gembox.document License Key Jun 2026

: A 30-day temporary key provided by support for full-feature testing without limitations. Licensing Policies

| Error Message | Likely Cause | |----------------------------------------|------------------------------------------------| | "License key is not set" | You didn’t call SetLicense before using API. | | "License key is invalid or expired" | Wrong key, or trial key expired. | | "License key doesn't match assembly" | Key for another GemBox product (e.g., GemBox.Pdf). | Gembox.document License Key

| Need | Action | |------|--------| | Free development | Use the (limited to 20 paragraphs per document). | | Testing / open source | Apply for a free license (sometimes available for OSS or evaluation). | | Production use | Buy a developer license (one-time fee, perpetual, includes updates for 1 year). | | Volume licensing | Contact GemBox directly for site licenses. | : A 30-day temporary key provided by support