[Bug 48991] New: Riot Vanguard (Riot Games) fails to install due to 'xcopy' unhandled parameter '/G'

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48991

Bug ID: 48991
           Summary: Riot Vanguard (Riot Games) fails to install due to
                    'xcopy' unhandled parameter '/G'
           Product: Wine
           Version: 5.6
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: programs
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Hello folks,

as it says. The game client reports the sub-installer failing with invalid exit
code 10040.

Snapshot via Internet Archive:

https://web.archive.org/web/20200420204157/https://valorant.secure.dyn.riotc...

--- snip ---
...
000010.958|   OKAY| Successfully downloaded third-party dependency
'https://riot-client.secure.dyn.riotcdn.net/channels/public/rccontent/vanguar...'
000010.984|   OKAY| Successfully verified third-party dependency installer
'setup.exe'
000024.927| ALWAYS| Removing entries in directory: C:/ProgramData/Riot
Games/Metadata/vanguard
000024.931|  ERROR| Unable to run installation: Process exited with invalid
exit code 10040
--- snip ---

--- snip ---
$ WINEDEBUG=+seh,+relay,+xcopy wine ./setup.exe >>log.txt 2>&1
...
002c:Call KERNEL32.CreateProcessW(00000000,0032ea68
L""C:\users\focht\Temp\7zC0F7402B\uninstall.exe"",00000000,00000000,00000000,00000000,00000000,00000000,0032fdc0,0032fe64)
ret=0040a3c3 
...
002c:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=0040a3c3
...
002e:Call KERNEL32.CreateProcessW(00000000,0136f190
L""C:\users\focht\Temp\7zC0F7402B\vgc.exe"",00000000,00000000,00000000,00000000,00000000,00000000,0022f830,0022f7a8)
ret=00b073a1 
...
002e:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=00b073a1 
...
0030:Call KERNEL32.CreateProcessW(00000000,011b8060
L""C:\windows\system32\cmd.exe" /d /c
""C:\windows\system32\timeout.exe" /NOBREAK /T 0 &&
"C:\windows\system32\xcopy.exe" /I /E /C /G /H /R /Y
"C:\users\focht\Temp\7zC0F7402B\*" "C:\Program Files\Riot
Vanguard""",00000000,00000000,00000000,00000410,00000000,00000000,0022d100,0022d0e0)
ret=7f239280e73f 
...
0030:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=7f239280e73f 
...
0038:Call KERNEL32.CreateProcessW(00222290
L"C:\windows\system32\\xcopy.exe",00ea9590
L""C:\windows\system32\xcopy.exe" /I /E /C /G /H /R /Y
"C:\users\focht\Temp\7zC0F7402B\*" "C:\Program Files\Riot
Vanguard"",00000000,00000000,00000001,7ffb00000000,00000000,00000000,002221c0,00222228)
ret=140012d31 
...
0038:Ret  KERNEL32.CreateProcessW() retval=00000001 ret=140012d31 
...
0063:trace:xcopy:XCOPY_ParseCommandLine Processing Arg: 'L"/E"'
0063:trace:xcopy:XCOPY_ParseCommandLine Processing Arg: 'L"/C"'
0063:trace:xcopy:XCOPY_ParseCommandLine Processing Arg: 'L"/G"'
0063:trace:xcopy:XCOPY_ParseCommandLine Unhandled parameter 'L"/G"'
0063:trace:xcopy:XCOPY_wprintf Writing to console? (1)
0063:trace:xcopy:wmain Supplied parameters:
0063:trace:xcopy:wmain Source      : 'L""'
0063:trace:xcopy:wmain Destination : 'L""'
0063:fixme:xcopy:XCOPY_ProcessSourceParm Unexpected failure expanding source
path (0)
...
--- snip ---

Microsoft docs:

https://docs.microsoft.com/en-us/windows-server/administration/windows-comma...

Better docs:

https://ss64.com/nt/xcopy.html

--- snip ---
/G    Allow the copying of encrypted files to a destination that does not
support encryption.
--- snip ---

$ sha1sum setup.exe 
08deca4c0b46a3481e706926c0217d1c944d22a3  setup.exe

$ du -sh setup.exe 
15M    setup.exe

$ wine --version
wine-5.6-258-gf31a29b8d1

Regards