🔐 License Help
AI SQL Tuner Studio – License Activation & Troubleshooting Guide
Last updated: October 2026
How you activate AI SQL Tuner Studio depends on where you got it. The Microsoft Store version activates from your Microsoft account and needs no license key. The direct download from aisqltuner.com activates with a license key. The app is the same either way.
🎯 Editions
Every edition includes all six tuning goals and works with SQL Server, Azure SQL Database, Azure SQL Managed Instance and Fabric SQL Database. The editions differ in monthly analyses, server connections, AI models and reasoning levels:
| Edition | Analyses per month | Server connections | AI models | Reasoning effort | Bring your own AI endpoint |
|---|---|---|---|---|---|
| Free | 10 | 1 | GPT-5.6 Luna | Low, Medium | No |
| Pro | 50 | Up to 2 | GPT-5.6 Luna | Low, Medium, High | Yes |
| Team | 150 | Up to 2 | GPT-5.6 Luna, GPT-6 Sol | Low, Medium, High | Yes |
| Enterprise | 400 | Unlimited | GPT-5.6 Luna, GPT-6 Sol | Low, Medium, High | Yes |
Each analysis on the hosted AI service uses one unit of your monthly quota. A run that times out does not count, and runs on your own AI endpoint never count. The count resets each month on the day your subscription or free license started. See Compare Editions for pricing.
Bought Standard, Pro or Corporate before? The editions were renamed, and your license key keeps working: Standard is now Pro, Pro is now Team, and Corporate is now Enterprise.
🪟 If You Got It From the Microsoft Store
You don’t need a license key. When the app starts, it activates from the account signed in to the Microsoft Store on your PC. The Free edition activates this way too, with no subscription.
- To retry activation by hand, use Help → Activate with Microsoft Store.
- If you see No Microsoft Store purchase was found for the signed-in account right after installing or subscribing, the Store may not have reported the purchase yet. Wait a few minutes and use Help → Activate with Microsoft Store again.
To subscribe to Pro, Team or Enterprise in the Store version:
- Open Help → Manage license… (or License… in the Edition & Licensing panel).
- Under Microsoft Store subscription, each edition is listed with its price for your market. Click Subscribe next to the one you want.
- Complete the purchase in the Microsoft Store window that opens. The Store handles payment.
- The app activates the subscription straight away, and the Edition & Licensing panel shows the new edition. If it says the purchase is not activated yet, use Help → Activate with Microsoft Store again in a few minutes.
Microsoft Store subscriptions are monthly and renew automatically. Manage or cancel them at account.microsoft.com/services; a cancelled subscription stays active until the end of the period you paid for. The Store doesn’t switch a subscription from one edition to another: to move up, subscribe to the higher edition and cancel the lower one. While you own more than one, the app uses the highest.
Microsoft Store subscriptions don’t include the 14-day free trial or the 30-day money-back guarantee; both apply only to purchases on aisqltuner.com. If you enter a license key in the Store version, the key takes priority over your Store purchase.
🔑 If You Downloaded It From aisqltuner.com
The direct download activates with a license key. You get the key by email after checkout, including for the Free edition, which checks out at $0. Signed-in customers can also see their keys on the My License Keys page.
- In the Edition & Licensing section, select your edition in the Edition dropdown.
- Click License… (or use Help → Manage license… or Ctrl+L) to open the activation dialog.
- Paste your license key.
- Click Save. The app saves the key and activates it with the licensing service.
Once the key activates, the sidebar shows your edition, how many analyses you’ve used this month, your limit and the reset date. Activating a key sets the Edition dropdown to the edition the key is for. If you selected a different edition, the sidebar says so, for example: Your license activates as Pro, not Team. Selecting a higher edition in the dropdown does not unlock it; the licensing service decides your edition, models and quota.
🔍 How to Check Your License
The sidebar always shows your active edition, the analyses used against your monthly limit, and the date the count resets. Before each run, the run plan’s License card shows the same information.
❌ If Activation Fails
When the licensing service refuses a license, the sidebar shows Activation failed with a red dot and the reason. Runs are refused until the license activates, so fix the cause and save the key again from License…. If the service can’t be reached because of a network problem, the sidebar keeps showing your last successful activation.
| Message | What it means and what to do |
|---|---|
| The license key has expired. | The key was valid but its term has ended. Renew it. |
| The license key has been disabled. | The key was revoked. Contact support. |
| The license key has no activations left. | Deactivate another installation, or buy more seats. |
| The license key was not found. | The key does not exist. Check for a typo. |
| The license key is for a product that is not one of the editions this application supports. | The key exists but isn’t registered to an AI SQL Tuner Studio edition. Contact support with the key. Keys bought under an edition’s former name still work. |
| The Microsoft Store subscription on this account expired on … | Your Store subscription lapsed. Renew it in the Microsoft Store. |
| The Microsoft Store entitlement on this account is a trial. | You’re on a trial. Buy the full edition to continue. |
| No Microsoft Store purchase was found for the signed-in account. | The Store account signed in on this PC doesn’t own the app. Check that you’re signed in with the account that bought it. Right after a purchase, wait a few minutes and try Help → Activate with Microsoft Store again. |
| The licensing service is temporarily unavailable. | A service problem, not a problem with your key. Try again shortly. |
📦 Where to Buy, Upgrade or Renew
- Direct download: buy or start a 14-day free trial of Pro, Team or Enterprise from Compare Editions. A payment card is required at checkout, and nothing is charged until the trial ends. Purchases on aisqltuner.com are covered by our 30-day money-back guarantee.
- Microsoft Store: subscribe inside the app from Help → Manage license…, and manage or cancel at account.microsoft.com/services.
Install only one version. Windows treats the Store and direct-download versions as separate apps, so if you switch, uninstall the one you no longer use. The FAQ explains which to choose, and the user guide covers licensing in more detail.
📧 Need Help?
If you’re having trouble activating your license, contact us:
- Email: support@aisqltuner.com
- Include your license key (or say you use the Microsoft Store version), your edition, and the exact message the app shows
- We respond within 24 hours on business days