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Help: Multiple Copies of Apps within the ‘Open With’ Menu

The Problem:
When a user right clicks a file and selects ‘Open With’ there are multiple copies of the same App listed several times.

openwith multiple apps

The Solution
This can be fixed by reseting ‘Launch Services’, a set of several files which deals with associating file types with applications. The following instructions will rebuild ‘Launch Services’ for Snow Leopard (10.6), Lion (10.7) and Mountain Lion (10.8)

1. Open Terminal (Available in Finder > Applications > Utilities)

2. Type in the following text and press enter.

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain user

You may need to wait 10-20 seconds while the command is processed.
3. Close and Quit Terminal.

To check that this has solved the issue, right click a file and check

Trusted Certified Apple Pro

I'm Luke, I used to work for Apple in Southampton as a trainer and technician. I am also a qualified Apple Pro with certifications in Aperture 3 and Final Cut Pro. I am also a qualified school teacher and work part-time at a school in the New forest.

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Trusted Mac Teacher

We asked for Luke to come in for a training day with our staff since we were taking over the running of a Mac office and all had very little experience of using them. We found the half a day of training exceptionally useful. We were taught basic things, however we could already see that they would greatly increase our productivity and understanding of how to get the best out of using the Mac computers. The session was the best of both worlds of being taught the basics that we were lacking but without going too basic and wasting time. Will definitely be getting Luke back in again soon!

Stuart, Southampton

Thank you Luke for sorting out all my Apple issues! Luke was able to set up my multiple computers, phones and iPads with home and business email and calendar accounts. I have used his services multiple times and he always knows what to do, from printers, wifi and fix any issues whenever my Mac breaks or I need help with Office apps. Highly recommended.

K Van Der Vorm, Lymington