Malwarebytes for Android provides error codes and messages for connection, activation and authentication issues. This article describes the error messages including error codes, description, and recommended resolution for the error encountered.
Connection errors
| Code | Message/description | Resolution |
| MB991 | Registration error. We are having trouble reaching our registration server. Try again later or contact Support. | Check your internet connection and try again. If the issue persists, submit a ticket with Support. |
| There was an issue deactivating Malwarebytes. | An active internet connection is needed to complete this action. Check your internet connection and try again. If the issue persists, submit a ticket with Support. |
Activation errors
| Code | Message/description | Resolution |
| MB403100 | There's a problem with your license key and we are unable to activate your license. | Submit a ticket with Support. |
| MB403101 | There's an issue with your license key. Please contact Support. | Submit a ticket with Support. |
| MB403101 | There's an issue with your license key. Please contact Support. | Submit a ticket with Support. |
| MB403102 | The license key is expired. Enter another key or purchase a new one. | Purchase a valid subscription. You can make an in-app purchase from the Google Play store or visit our Pricing page, and activate after creating your Malwarebytes Account. |
| MB403103 | This license does not match the product your are trying to activate. Enter another key or purchase a new one. | Purchase a valid subscription. You can make an in-app purchase from the Google Play store or visit our Pricing page, and activate after creating your Malwarebytes Account. |
| MB403104 | This license key was already used to activate the maximum seats available. | Deactivate devices or purchase another subscription. See how to deactivate a device, make an in-app purchase from the App store or visit our Pricing page, and activate after creating your Malwarebytes Account. |
| MB403105 | The license key has been refunded. Enter another key or purchase a new one. | Purchase a valid subscription. You can make an in-app purchase from the Google Play store or visit our Pricing page, and activate after creating your Malwarebytes Account. |
| MB404102 | License key not found. Make sure that it's correct. | Check your license details and try again. If the issue persists, contact Support. |
| MB404100 | This subscription is cancelled. Use another subscription or purchase a new one. | Purchase a valid subscription. You can make an in-app purchase from the Google Play store or visit our Pricing page, and activate after creating your Malwarebytes Account. |
Authentication errors
| Message/description | Resolution |
| Your account does not include Malwarebytes Mobile Security. To get started, add a Malwarebytes Mobile Security subscription. | Purchase a valid subscription. You can make an in-app purchase from the Google Play store or visit our Pricing page, and activate after creating your Malwarebytes Account. |
| Verify your email and password are correct and try again. | Check your sign in credentials, then try to sign in again. If the issue persists, submit a ticket with Support. |
| Your email and/or password is incorrect. You have x more attempts in total before your account is locked. | Check your sign in credentials, then try to sign in again. If the issue persists, submit a ticket with Support. |
| You have reached the maximum number of invalid attempts. For security reasons, your account has been temporarily locked. Please try again in 10 minutes. | Wait the recommended period of time, then try to sign in again. If the issue persists, submit a ticket with Support. |