If you are installing onto a hard drive that is failing, the installer might try to write a file, fail, and then report it as "missing" when it tries to read it back.
Often, Windows prevents an installer from placing files in protected folders (like C:\Program Files ). Right-click on the installer .exe file. Select 0x01 a critical installation file is missing
"0x01: A critical installation file is missing" (sometimes seen as "Error (0x1)") is most commonly associated with Call of Duty (Modern Warfare III/Warzone) when installed via the Xbox Game Pass app typically indicates that the Randgrid service If you are installing onto a hard drive
Locate the Various\Redist folder in your installation directory and run the VC_redist.x64.exe as an administrator to repair required system components. 5. Registry Cleanup 0x01 a critical installation file is missing