Confirmed and similar, duplicated behavior on ASA 5545X 9.6(4)29, ASDM 7.12(1), while attempting downloading /pcap captures from flash using a web browser UI, ( https://<asa_ip>/admin/capture/<capture_name>/pcap ). Browser denies access to capture with attached response.
Conditions: Gear and versions used above, special character '!' used on AAA Radius server (Active Directory Windows 2012 R2) sourced user account.
