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Activate MarketXLS

Apply your Windows license or sign in to the Microsoft 365 add-in.

Activate the add-in after you install it. The activation method depends on which MarketXLS add-in you use.

Activate the Windows desktop add-in

  1. Open desktop Excel on Windows.
  2. Select the MarketXLS tab.
  3. Select Settings/Help.
  4. Select Apply License.
  5. Paste the complete license key from your MarketXLS email.
  6. Submit the key and wait for the confirmation message.
Use Apply License for the Windows desktop add-in and keep the full key private.
The license information pane confirms the current Windows activation.

Avoid adding spaces before or after the license key.

Sign in to the Microsoft 365 add-in

  1. Open Excel on your Mac or in a web browser.
  2. Open MarketXLS (Web) from the ribbon.
  3. In the task pane, select Sign in.
  4. Enter the email address connected to your MarketXLS subscription.
  5. Complete the sign-in prompt.
Microsoft 365 activation uses your MarketXLS account sign-in instead of a pasted license key.
The signed-in account area confirms that the add-in can read your subscription.

Confirm access

After you activate or sign in, enter your first formula. A returned value confirms that Excel can reach MarketXLS.

If MarketXLS rejects a valid license, follow Fix an invalid license or sign-in problem. Don't send your full license key in a public message or screenshot.


© 2026 MarketXLS. Financial data documentation for Excel.