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Select the Path variable under “System Variables” and click the “Edit” button.
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Open the “Environment Variables” window.Open the Start menu, and type “advanced system settings”.Append %USERPROFILE%\adb-fastboot\platform-tools to the end of the existing Path definition (the semi-colon separates each path entry).In the Environment Variables window, highlight the Path variable in the Systems Variable section and click the Edit button.
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