Symptom
1. Attempt to upload Cisco-secure-client-macos-5.0.04032-webdeploy-k9.pkg to FMC; and will receive error "Error during file upload. Please ensure that the Firewall Management Center has enough space, the file is valid and that the file name contains only letters, digits, - and _. AnyConnect Image file names may contain .".
2. Successfully uploaded Windows and Linux clients, but the MacOS client returns the above error. NOTE: Window and Linux packages are under 100MB.
Conditions
Customer attempt to upload secure-client packages to FMC Any-connect Objects
Workaround
Upload a package that is under 100MB in size
Further Problem Description
Issue uploading package over 100MB, which all newer packages exceed that threshold.