===== [V7] ISSUE: LAN manager authentication level must be 3 or higher (cannot create MS Exchange mail level backup) =====
Article ID:
5342
Reviewed:
2018-05-24
Product Version:
AhsayOBM: 7.3.0.0 to 7.x
OS: Windows
ATTENTION
1st January, 2022: v7 officially End-of-Life [details]
===== Problem Description =====
When creating a MS Exchange Mail Level Backup Set, the following error message is displayed:
LAN Manager authentication level must be 3 or higher.
===== Cause =====
The error message suggested that for the domain which the Exchange server reside, the Network security: LAN Manager authentication level policy setting must be set to level 3 or higher (Registry security level), which is one of the following: