- Compatible with:
- macOS
- Available in:
- Desktop Security version 5
Error Message
Invalid key format.
What caused the error message
You tried activating your subscription using a license key. However, the license key that you entered was mistyped or not formatted correctly.
How to resolve the error
Check your license key details and review the tips in our Unable to activate a subscription with a license key article. If you can't find your license key, see Find my Malwarebytes license key.
After checking your license key, try entering your it again. If you still receive the error message, you will need to purchase a new subscription. Check out our Pricing page to view available plans.