⚠️ Do not edit this file manually unless you know the exact format. Instead, use the official license entry dialog (Method 4).
: The software will notify you every time you start PowerPoint or Excel if your license is within 14 days of expiring. Post-Expiration
The license key of this think-cell product will expire soon (valid until 31 October 2025).
You can manually verify and check your license directly in PowerPoint or Excel: how to check think cell license key install
Think‑cell is a premium PowerPoint and Excel add‑in used by thousands of organizations to create complex data‑driven charts (waterfall, Gantt, Mekko, etc.) in minutes. Like any professional software, think‑cell requires a valid license key to run. The license key is checked each time you start Microsoft PowerPoint or Microsoft Excel. If no valid license information is found on your system—or if the current key is about to expire—the think‑cell license key dialog will appear.
If you have tried all the above steps and the license key window still appears, it is time to contact think‑cell’s official support team.
| Symptom | What It Means | How to Fix | |---------|---------------|-------------| | | License missing, expired, or invalid | Reinstall the key via License Manager | | “Invalid Product Key” error | Typo or wrong key format | Copy-paste the key exactly from your purchase email | | No Think-Cell tab in PowerPoint | Add-in not registered or license not activated | Run repair from Think-Cell installer | | License disappears after reboot | Permission issue (common on corporate PCs) | Run Think-Cell installer as Administrator | ⚠️ Do not edit this file manually unless
Warning: Only do this if you are comfortable with the Registry Editor.
The easiest way to verify your license status is through the dialog within the Office ribbon. Open PowerPoint or Excel. Navigate to the Insert tab on the ribbon. Locate the think-cell group and click Tools . Select Help and then click About .
At the bottom of the window, set the Manage dropdown to and click Go . Post-Expiration The license key of this think-cell product
: Open the downloaded .pkg file and follow the standard macOS installation prompts. Step 3: Trigger the Activation Window
HKEY_CURRENT_USER\Software\Microsoft\Office\PowerPoint\Addins\thinkcell.addin Summary of Key Actions PowerPoint/Excel -> Insert -> think-cell -> Tools -> About Renew License Enter new key in the pop-up dialogue on launch Check Version
The license information is typically stored in the com.microsoft.office property list, often prefixed with com.think-cell.settings.licensekey . 4. Troubleshooting a "Missing" License