You saved the date. Thanks so much.

@lgijssel You saved the day, thank you

Metuckness2014, That's first step: Open web browser, browse to ASA address. And the way to export .CER file is based on each particular browser.

I got the same issue and the solution is import SSL certificate of the ASA to Certificate Snap-in:- Open https:\\asaipaddress- Export certificate to ABC.cer (up to browsers)- Start\Run => mmc- File => Add\Remove Snapin- Select Certificate \ Computer ...