Because modern versions of (3.7+) and the Android Emulator (29+) no longer support 32-bit Windows, you must use archived releases or specific standalone tools.

Sites like LO4D and Softonic host archived versions of the 32-bit SDK installer, though users should verify these downloads for security. How to Install 32-bit SDK Tools on Windows 7/8/10 SDK Platform Tools release notes | Android Studio

Standalone tools like adb and fastboot remained compatible with 32-bit systems longer than the IDE. Some community sources cite Revision 34.0.4 as a stable "Last Known Good Configuration" for 32-bit Windows. These can be downloaded directly from the Android Developer Platform Tools page .