- 如何查找我的构建号?
- 1 Log in to the O365 Manager Plus web client, and click the "License" link in the top pane.
- 2 You will find the "Build" number mentioned below the "Product Version"

M365 Security Plus 服务包
- Update Path Finder
- Service Pack path to the latest version
- 如何找到构建号?
| If your Build Number is | Upgrade to Build Number |
| 4400 | Download and upgrade to latest 4401 |

Important:
- We strongly recommend you to take backups before migrating. This helps you prevent accidental loss of data.
- If you have enabled high availability, please read this before applying the service pack.
Instructions to apply Service Pack
Note:
- If you need to apply more than one service pack, follow the same instructions for each installation.
- If you have enabled high availability, then follow the steps given below:
- Shut down both the primary and standby servers.
- Follow steps (2) through( 8) given above, and apply the service pack in both the servers.
- Start both the primary and standby servers.
How do I find my current build number?
- Log in to the M365 Security Plus web client.
- Click on the License link at the top right corner.
- Find the Build number.
Need Help?
You can contact M365 Security Plus Support at any time for assistance in upgrading M365 Security Plus to the latest version.