What is a .SIDD file?
The .SIDD file is a type of data file used by iTunes, which is a program for playing music and videos. This file contains important information that allows the computer and the user to play songs and videos that they have purchased. It works together with other similar files like .SIDB and .SIDN to manage these permissions.
Normally, you don't need to open a .SIDD file yourself because it is automatically used by iTunes to manage your access to your purchased media. The file is part of the system iTunes uses to make sure that only authorized users can play protected content.
iTunes, the program that uses .SIDD files, was available for both Windows and Mac computers, but it has been discontinued. This means it is no longer being updated or supported. On Windows 7 and 8, iTunes stored these .SIDD files in a specific folder on your computer at C:\ProgramData\Apple Computer\iTunes\SC Info\. For Windows XP, the files were stored in a slightly different location: C:\Documents and Settings\All Users\Application Data\Apple Computer\iTunes\SC Info\.
If you ever had trouble with iTunes not opening after installing a new version on Windows, one solution was to delete the .SIDD file along with .SIDB and .SIDN files from the locations mentioned above. After deleting these files, you would need to restart your computer and then try opening iTunes again. This could help resolve some issues related to file corruption or outdated authorization data.
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