Since Skype has been brought by Microsoft many OpenSource user afraid if there is no longer support/available skype for opensource, What happens then, some blog say's that "Some user failed to start their skype in the last 24 hours, is this Microsoft effect ?", may many people would think it,  hehe ... it's not true guys 'it is not the fault of Microsoft, it's fault of skype it self', it's write on their twitter here. Skype still have problem regarding to shared.xml issue and periodically happen in some skype platform. How to fix skype "Failed to start"  regarding to shared.xml ?, just delete shared.xml, it will be recreated then when Skype launch, check this tips :
 

How to Fix Skype on Ubuntu / Linux ?
Delete or move Skype configuration (shared.xml) in ~/.Skype/shared.xml, then lauch again your skype, do as following :

rm -rf  ~/.Skype/shared.xml
How to Fix Skype on Windows ?
do as following :
Skype is aware that a select number of users are experiencing problems. They have identified a manual fix so people can follow these instructions if they continue to have issues logging on:

Windows Vista and Windows 7

1. Close Skype.
  • Right-click the Skype icon in the system tray (at the bottom right of the screen)
  • Choose Quit.
2. Ensure that "Show hidden files and folders" is switched on.
  • Click Start, type run and press Enter.
  • Type control folders and click OK.
  • Select the View tab and ensure relevant entry is enabled.
3. Locate the shared.xml file.
  • Click Start, type run and press Enter.
  • Type %appdata%\skype and click OK.
  • Delete the shared.xml file.
4. Restart Skype. The shared.xml file will be recreated.

Windows XP
1. Close Skype.

  • Right-click the Skype icon in the system tray (at the bottom right of the screen)
  • Choose Quit.
2. Ensure that "Show hidden files and folders" is switched on.
  • Click Start and then Run...
  • Type control folders and click OK.
  • Select the View tab and ensure relevant entry is enabled.
3. Locate the shared.xml file.
  • Click Start and then Run...
  • Type %appdata%\skype and click OK.
  • Delete the shared.xml file.
4. Restart Skype. The shared.xml file will be recreated

How to Fix Skype on Mac ? 
1. Quit Skype.
2. Go to a printed matter ~/Library/Application Support/Skype/
3. Delete a record shared.xml (it will be recreated once we open Skype again, this is fine).
4. Start Skype.


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