The length of time a file is available in Skype, depends on the type of file you've shared:
- Files - available for 30 days.
- Call recordings - available for 30 days.
- Voicemails - available for 30 days.
After the applicable period, the content is deleted from Skype servers. If you would like access to the content for longer than the above period, please download and backup your content regularly.