I thought ASA will automatically push the newer version of Anyconnect VPN client to end-user computer when they connect. But I tried 2 scenarios below and none of them worked. Please let me know where I did wrong:
1. I replaced anyconnect client v2.5 with v3 in ASA. Then launch the anyconnect v2.5 from end-user laptop. After type in the username and password, it prompted me connection failed...
2. I uploaded/associated V3 besides v2.5 on ASA but keep V2.5 preferred (If I put v3 preferred, connection will fail again). Launch anyconnect v2.5, End-user connects with no issue but I do not see the upgrade happening.
BTW, I do not have any AnyConnect Client Profile on ASA. But do I need one in order for the automatic upgrade working? If so, where do I download the utility to create/modify profile?
In ASDM, make sure the "Auto Update" is selected in the AnyConnect profile editor under preferences so the upgrade can take effect. You may want to disable the user controllable option if you want to force the upgrade.