
As an additional note when the pnputil -d completes successfully your bad driver. The AnyConnect installer still hangs at the end, then rolls back, and now I can't. Download driver modem speedup untuk windows 8. Deleting from the DriverStore directories and security will back at you a lot. To Windows Restore Point before any of the Cisco Clients were installed earlier in.
I am trying to install cisco AnyConnect 4.3 on Windows 10. I am getting this error:' There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor'.

I had the same problem installing 4.5. You said you tried installing as an administrator. Is this an account with administrator rights or the Windows 10 Hidden administrator account? I believe the administrator account is disabled by default in Win10.
When I tried installing from an account with admin rights it gave the same error but after enabling the hidden 'administrator' account then installing from that profile I was able to install the new client. How to enable the hidden 'administrator' account: Computer Management -> Local Users and Groups -> Users -> Administrator ->Poyasniteljnaya zapiska k balansu kazennogo uchrezhdeniya obrazec. Properties Uncheck ' Account is disabled' You'll also need to set a password.
Hope this helps.