| 1 | <?xml version='1.0' encoding='UTF-8'?>
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| 2 | <!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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| 3 | <topic xml:lang="en-us" id="ts_win-dnd-uipi">
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| 4 | <title>Drag'n Drop not Working</title>
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| 5 |
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| 6 | <body>
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| 7 | <p>
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| 8 | Microsoft Windows uses technologies like UAC (User Account Control) and
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| 9 | UIPI (User Interface Privilege Isolation) to prevent and/or mitigate
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| 10 | security issues. By default, UAC and UIPI are enabled.
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| 11 | </p>
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| 12 | <p>
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| 13 | When an Oracle VM VirtualBox VM process is running with a higher so-called
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| 14 | privilege level than another process that wants to interact with the
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| 15 | VM process via drag'n drop (or system clipboard), Windows prevents this
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| 16 | by default due to security reasons. This results in Oracle VM VirtualBox not
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| 17 | being able to receive any Windows messages for drag'n drop. To make this work,
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| 18 | the Oracle VM VirtualBox VM process must be running with
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| 19 | the same (or lower) privilege level as the process it is interacting with
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| 20 | using drag'n drop.</p>
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| 21 |
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| 22 | <p>Disabling UAC and/or UIPI is not recommended.
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| 23 | </p>
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| 24 | </body>
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| 25 |
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| 26 | </topic>
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