iTunes fails to update

Since I have run the downloaded installer, iTunes (the older version) is no longer installed on this Windows 8.1 machine.

Is iTunes no longer available for Windows 8.1? That would seem to be a crazy situation. Although I don't often use it on Windows 8.1.

There was a similar error with Quicktime too

 itunes update fail.JPG   37.75KB   0 downloads  itunes update failure.JPG   31.18KB   0 downloads

Edited by HairCut, 14 March 2016 - 01:58 PM.

The iTunes 64-bit installer must be used with Windows 8.1.

Seems like it's permissions issue.
 
1: Press win+r shortcut on the keyboard >> enter %programdata% in the window that will pop up and press enter.
2: Navigate to the Apple\Apple Application Support folder
3: Right click on the kdrl directory and select properties, then select security tab.
4: In the 'Group or user names' box, there should be the following entries;
 

• SYSTEM
• Administrators (name of your computer\Administrators)
• Users (name of your computer\Users)

 
If necessary you can add them using the Edit button and then Add.
 
5: Set the permissions for these user names as stated below:
 

• SYSTEM - check all boxes except 'Special Permissions'
• Administrators (name of your computer\Administrators) - check all boxes except 'Special Permissions'
• Users (name of your computer\Users) - check Read & execute, List folder contents and Read.

 
6: Rember to click 'Apply' after setting up each user name, and when you are done, just OK your way back out of the properties dialog box.
 

Try to update iTunes now.

Thanks for the advice. Which has been successful. I've taken a long tme to get around to it as I didn't need itunes on this machine all this time.

I added SYSTEM and gave it 'full control'. During install, a second message about "error getting file security' on a second folder appeared where I repeated the operation in permissions. So now iTunes is installed.

Now let's see if iTunes deletes my purchased audio files from ipod like it has done in the past