how do you fix a missing GNDSK_MANAGER.DLL file?

Hi cara2973,

If you are having trouble updating the iTunes software, you may need to remove and reinstall additional components. Take a look at the troubleshooting steps in this resource:

If you can't install or update iTunes for Windows - Apple Support
http://support.apple.com/en-gb/HT201668

If you can't install or update iTunes for Windows

Learn what to do if you can’t install or update iTunes on your Windows PC.

If you can’t install iTunes on your Windows PC, or if you see “error 7” or “error 2” after you install the software, follow the steps below in order.

If you see a different error when trying to launch iTunes, follow the steps in iTunes for Windows Vista, Windows 7, or Windows 8: Fix unexpected quits or launch issues.

1. Make sure that you're logged in to your computer as an administrator.
   If you're not sure if you have an administrator account, read Windows 7: How do I log on as an administrator? You can also refer to your computer's help system, contact your IT department, or visit support.microsoft.com for assistance.
   
2. Install the latest Microsoft Windows updates.
   To download the latest updates, visit the Microsoft Windows Update website. iTunes for Windows requires Windows XP, Windows Vista, Windows 7, or Windows 8, with the latest Service Pack installed. If you can’t install the updates, refer to your computer's help system, contact your IT department, or visit support.microsoft.com for assistance.
   
3. Visit the iTunes download page. Click Download Now to download the iTunes installer. When prompted, click Save (instead of Run).
   
4. Right click on iTunesSetup or iTunes64Setup (the installer you downloaded in step 3).
   If you have Windows Vista, Windows 7, and Windows 8: Choose "Run as administrator."
   If you have Windows XP: Choose Open.
   If you've previously installed iTunes, the installer will prompt you to repair the software.
   After the repair is complete, restart your computer and try launching iTunes.
   
5. If iTunes fails to install or repair, it might be necessary to remove components left from a previous installation of iTunes and then reinstall.
   Remove and reinstall iTunes and other software components for Windows XP.
   Remove and reinstall iTunes and other software components for Windows Vista, Windows 7, or Windows 8.
   Songs you bought from the iTunes Store or imported from CDs are saved in your My Music folder by default. Deleting iTunes won’t delete your music.
   
6. Disable conflicting software.
   Some background processes can cause issues that prevent applications like iTunes from installing.
   If you installed security software and are having issues installing iTunes for Windows, you might need to disable or uninstall security software to resolve the issues.
   
7. Restart your computer.
   
8. After the restart, and adjusting the software running on your PC, install iTunes again.

Get more help

If the steps in this article don't help you resolve the issue, you might be able to find a solution through a search of the Microsoft support website.

If you receive errors regarding inaccessible registry keys during installation, try the steps found in "Could not open key" message when installing iTunes or Apple components for Windows.

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Last Modified: Feb 2, 2015

I hope this information helps ....

- Judy

Hmm, I have a couple of machines running 12.1 and cannot find any trace of this file you are getting errors for. 😕

Assuming the advice above doesn't resolve things you could try this alternate version:

iTunes 12.1.0.71 for Windows (64-bit - for older video cards) - itunes64setup.exe (2015-01-28)

which is a 64-bit installer for the 32-bit version of the core application, similar to previous 64-bit releases.

Or roll back to the previous build:

• iTunes 12.0.1.26 for Windows (32-bit) - iTunesSetup.exe (2014-10-16)
• iTunes 12.0.1.26 for Windows (64-bit) - iTunes64Setup.exe (2014-10-16)

tt2

cara2973

I have had exactly the same error message at the end of January this year (so you are not alone) after having the error message below at the beginning of January.

iTunes.exe - entry point not found

The procedure entry point "ADadPolicyEngine_DidEnterStation" Could not be located in the dynamic link library C:\Program(x86)\iTunes\iTunes .dll

iTunes not installed correctly re-install iTunes

Error 7 (Windows error 126)

So watch out for that one.

I run on a 64 bit machine as well but on Windows 8.1 The only solution I have found is to uninstall all apple components in the recommended order then reinstall.

These problems have appeared to me each time iTunes tells me there is a 12.1 update and I have downloaded it. Each reinstall I have installed 12.1 so I am not going to install any 12.1 updates until it changes from 12.1.

So as I say just wanted to let you know you are not the only one with this problem. I have run iTunes in Windows for years using XP, Vista and previous platforms and have no problems only since I have had Windows 8 then 8.1, I have never run on 7 if I had perhaps I would have had the problem sooner.

Knighty77