Malwarebytes for Android version 3 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. |