0x01 A Critical Installation File Is Missing Access

The installer package itself may be corrupt because the download was clipped.

: Antivirus or firewalls may block the installer from downloading or writing files to your drive. 0x01 a critical installation file is missing

This bypasses any temporary extraction failures that can trigger the 0x01 error. The installer package itself may be corrupt because

: A stalled installer service can cause file-access errors. 0x01 a critical installation file is missing