Hi David,
The zip file is ok, afaik
C:\Home\Downloads>7z T qt6-6.2.4-os2-20221204.zip
7-Zip [32] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=en_US.IBM-850,Utf16=on,HugeFiles=on,32 bits,4 CPUs 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz (806C1),ASM,AES-NI)
Scanning the drive for archives:
1 file, 60993569 bytes (59 MiB)
Testing archive: qt6-6.2.4-os2-20221204.zip
--
Path = qt6-6.2.4-os2-20221204.zip
Type = zip
Physical Size = 60993569
Everything is Ok
Folders: 519
Files: 6964
Size: 202940092
Compressed: 60993569