Update: as noted by some, this is a problem brought about by NOD32. An issue item for this in their system is:
https://forum.eset.com/topic/16237-probleme-debug-delphi-with-eset-11249/
Delphi 10.2.1 and 10.2.3 hang when starting (with debugging) any 32 bit application on Windows 10/64. This started after the computer was rebooted for the weekend like it is every weekend.
Debugging a 64 bit project compiles & runs ok. Debugging a 32 bit project compiles but hangs before/slightly after the project even starts running ("end task" on Delphi is the only option now). If I run without the debugger, the project runs ok. Delphi "stops responding".
I've seen this single form "do nothing" test application I have used to investigate this freeze after loading Kernel32 or Comdlg32.
Hearing how similar this is to the problems with Delphi 10.2 and Windows 10's Creator update, I migrated to Delphi 10.2.3. Same problem as before.
I restored to a backup of the Windows partition. After I did that, it worked until I rebooted and then it broke again.
I went to an earlier backup of the Windows partition & got the same result.
This is so strange...any ideas?
I Thought it might relate to Nod32 as I had the same issue happen after a nod 32 update.
I have added the BDS.exe directory to be excluded from real time file system protection.
Seems to be fine now.