Win7 system mouse can not drag files how to solve?

  

How can I solve the problem that Win7 system mouse can't drag files?

1. Open the Start menu and click “Run” to enter “>gpedit.msc”, OK.

2, pop-up "local group policy editor ", double-click "admin template" "

3, double-click "Windows components", slide down to find, & rdquo; The task scheduler “ and double click.

4, double-click & rdquo; prohibit drag and drop “, select & rdquo; not configured “ or & rdquo; has been disabled & ldquo;, then OK.

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