Technical Tip: FortiSandbox Office license become invalid after firmware upgrade
| Description | This article describes how to troubleshoot a FortiSandbox Office license that becomes invalid after a firmware upgrade. |
| Scope | FortiSandbox before v5.0.1. |
| Solution | FortiSandbox experience Office key becomes invalid after firmware upgrade to v4.4.7.
'New Office2021 Key SN#' format changed, causing mishandling of key format, rendering 'KEY_2021 invalid'.
To resolve this, continue upgrading to v5.0.1 (Resolved Issues 5.0.1) onward, as the new validation process fixes Office 2021 Activation. |

