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Does Quick Time Pro run on 64-bit Win7?

Posted on 2011-03-24
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Last Modified: 2012-08-14
With Quick Time Pro I receive the following error when trying to open ANY file, including MOV:
"Error 1856: an unknown error occurred".
I tried uninstalling, downloading the latest version of Quick Time Player, then re-installing.
Does Quick Time Pro not function on Win7 64-bit OS?

Quick Time Player = version 7.6.9
Laptop = Win7 Home Premium (64-bit)
  2.53 GHz Intel Core i3 380
  382 GB free hard drive space
  Intel HD Graphics Display Adapter
  Conexant SmartAudio HD
  Intel Display Adapter
  4 GB RAM

Thank you.  Alan P.
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Question by:adp002
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4 Comments
 
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by:Lordy123
ID: 35208826
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Accepted Solution

by:
Lordy123 earned 2000 total points
ID: 35208851
From the searches I've done this fix works for a number of people running into that same error:

Try this:

1. Fully uninstall QuickTime
2. Download the K-lite Codec pack (I downloaded the full version here http://www.free-codecs.com/K_lite_codec_pack_download.htm)
3. Install it and accept its changes it will make
4. Once K-lite is installed, now you can re-install QuickTime

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Assisted Solution

by:adp002
adp002 earned 0 total points
ID: 35210366
Thanks for the idea of searching for 64-bit error 1856.  The solution that worked for me is from an Apple user-to-user forum:    
                http://discussions.info.apple.com/thread.jspa?threadID=2679772&tstart=15
 
"You can set your QuickTime Player to always run as an administrator.

Right-click your QuickTimePlayer.exe at:
                                             
C:\Program Files (x86)\QuickTime\QuickTimePlayer.exe

... and select "Properties". In the Compatibility tab, check "Run as Administrator" and click OK."
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Author Closing Comment

by:adp002
ID: 35239124
My own comment is included as part of the solution because the first solution did not work for me, but the idea of searching for the error msg on a 64-bit Win7 system is a good one.
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