i can't reproduce this...
Is your application, or the console runner of the hello world still running? You have to look in the task manager...
It was working fine for the first month. I was using the same anti-virus back then and I don't have an internet connection at home so I'm pretty sure that it hasn't made any update. Also in my second computer I use the same antiviru s and program works fine in that too
New Anti Virus work on heuristics and not on signature, so they don't have to work deterministic. The same anti virus on two different machines don't have to detect the same file if the previous history of the file is not the same. For example the file what does first A then B and then C on one pc 1 but only does B and C on pc 2 can trigger the anti virus on pc 1 but not on pc 2...
This error pops up if the output file does not change or is not existent, so can you check if there is a exe in your bin folder after building?
If there is no exe there are three most probably answers:
1) You don't have write access to the output directory (this not your case, because the file was build the first time)
2) You don't have write access to the output file (for example the file is still executed, but this is also unlikely because then the compiler would have thrown a error about not be able to open the file for writing)
3) The anti virus deletes the file, or blocks the access after the compiler created it... (possible because after the first run your exe did "Hello wordl" but on the second run it did something else)
hope this helps
greetings