Is An App 32 or 64 Bit?

Posted on January 23, 2011

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If your Windows OS is 64-bit, sometimes you need to know if a running app is 64-bit.  The simplest way to determine this is via the Windows Task Manager (Ctrl+Shift+Esc).  In the Processes tab, you’ll see a list of Image Names (running apps) along with the bit-ness indicator of “*32”.  If it doesn’t have the “*32” in the name, it’s running 64-bit natively.

Often times, knowing this will also help you determine if the app is installed in “Program Files” or “Program Files(x86)”, for 64 and 32-bit respectively.

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