Fix for the error that work for me is https://support.apple.com/en-us/HT204972. Not only iTunes was fixed that way, but also duet application start work after fix.
- Navigate to
C:\Windows\System32
. - Locate the
msvcr100.dll
file.
Make sure that the file name is exactlymsvcr100.dll
. If you’re unable to locatemsvcr100.dll
, do not continue with these steps and do not move other files from this folder. - Drag
msvcr100.dll
to the desktop. When prompted, click Continue. - After you drag the file to the desktop, try performing a repair on both installed versions of Apple Application Support (64 and 32-bit) in the Add/Remove Programs list in the Control Panel. iTunes requires both versions of Apple Application Support. Learn how to navigate to the Add/Remove programs list in Windows 7,Windows 8, and Windows 10, then follow these steps:
- Click Apple Application Support 32-bit to select it.
- Right-click Apple Application Support 32-bit to open the shortcut menu.
- Select ‘Repair’ and complete the Repair Wizard.
- Perform the same steps for Apple Application Support 64-bit.
- Try to launch iTunes.
- If there's still an issue, download a new copy of the iTunes installer.
- Completely remove and reinstall iTunes and related software components from your computer. Then, reinstall iTunes.
- If you still see the messages, restart your computer and try to launch iTunes again. If iTunes launches correctly, place
msvcr100.dll
in the Recycle Bin and then empty the Recycle Bin. - If there's still an issue, contact Apple Support for more help.