I am using the NirCmd Command Line utility. It works fine on Windows 10, but I am trying to use it on Windows XP SP3. It says that it is not a Win32 compatible program. The website claims that it works on Windows XP - 10. I have turned off my antivirus and firewall and it still won't run. Is there anything I can do to get it to run on Win XP?
You have accidentally downloaded the 64-bit version of NirCmd. This generally results in a not a Win32 Application error.
Use the 32-bit version available for download here: http://www.nirsoft.net/utils/nircmd.zip
P.S. Don't listen to people who try to scare you into upgrading. You are safe to stay with Windows XP if you have a decent firewall and avoid malicious sites while browsing the web.