ASA vpn page loading slow

when you need around 2 minutes to load your vpn portal page, you might need check the setting of following: 

is the network storage accessible?

user-storage

To store personalized user information between clientless SSL VPN sessions, use the user storage command in group-policy webvpn mode. To disable user storage, use the noversionof the command.

user-storage NETFS-location

no user-storage]

Syntax Description

NETFS-location

Specifies a file system desination in the form proto://user:password@host:port/path

of course you can check via ASDM

ASA SSL VPN

when you configure SSL VPN, there are two important setting you need really pay attention:

• Simultaneous logins
• Connection Profile ( Tunnel Group) Lock

if all other setting no problem, and you always get login fail error, please uncheck inherit and try.

ASA license issue

ClientLess VPN (Clientless (browser) SSL VPN access is not allowed.)

you might see error like that when  you apply the license you bought from Cisco
if you need do clientless VPN as well SSL any connect VPN, you need buy the premium license,
you can remove the essentials license use:

webvpn

  no anyconnect-essentials