Access is denied in windows cmd.Why?

Question

a.txt and b.txt are text files and in_red.exe is a program that takes in input as characters and outputs characters till EOF is reached.I am the admin of the system. Also,windows gives a popup saying this app isin't available in your PC.

    C:\Users\Aryamaan Jain\Desktop\io_redir>dir /b
    a.txt
    b.txt
    in_red.exe

    C:\Users\Aryamaan Jain\Desktop\io_redir>in_red.exe < a.txt >b.txt
    Access is denied.

Answer 1

After a long search,I found out that the program in_red.exe got corrupted(became of size 0kb) for some reason I don't know. However, I replaced the program and now the command is working perfectly.

Answer 2

Access is denied as you are not the owner of the folder where you are trying to execute the command. To get ownership of the folder please follow the following steps:

1. Right click folder
2. Select "Properties"
3. Select the "Security" tab
4. Click the "Advanced" button
5. Select the "Owner" tab
6. Click the "Edit" button
7. Under 'Change owner to' highlight the user you wish to set as owner
8. Check the 'Replace owner on subcontainers and objects' box
9. Click the 'Apply' button