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what does error code -50 mean?

please help me what does error code -50 mean??

iPhone 4, iOS 5

Posted on Oct 23, 2011 2:35 AM

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2 replies

Dec 7, 2011 5:30 AM in response to stev125

Steve, You don't give any context as to what you were doing when you got the -50 error but I'll relate where I have seen it.


Error -50 is described as being caused by an "Error in [a] user parameter list" (http://support.apple.com/kb/ht1618).

I have found it during bulk copy operations performed by dragging a folder that contained a file with a name containing a %20 (representing a space). Presumably this was resulting in a space being created in a file copy command line and the list of parameters for the command had an incorrect additional parameter as a result. Bulk copies between differently formatted disks or where the file names came from a third source such as a file/xml etc. are probably more likely to result in these unsupported file names. Problems are more likely to be identified during bulk copies as there are more files involved. Using a command line cp -R was a workaround for me (http://support.apple.com/kb/TA20831).


There is also mention in http://support.apple.com/kb/TS3694#error50 of error -50 being caused by timeouts over USB for which they recommend direct USB connection not using any hub. I have also seen hubs cause other issues which can be difficult to believe at the time but direct connnection is worth trying if you aren't already directly connected.

what does error code -50 mean?

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