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Library needs re-adding every time I load Kontakt

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There is a known Kontakt bug that occasionally occurs with some of our Kontakt Player libraries, you may find the following symptoms:

1. The library may need to be re-added every time you launch Kontakt

2. You may be unable to activate the library with your serial number because the option to authorise doesn’t appear in the Native Instruments Service Centre.

3. The library may show as running in demo mode.

4. You may get the following error messages:

"Error while writing files to disk. Adding the library has failed."

"**** can not be activated. Please run the original installer of the library."

Please remove the library from the libraries pane, quit Kontakt and download the relevant file for your library below.

Once you have downloaded the file, please copy it to the following location on your computer, replacing the file that is already there (if there is one),
Mac - HD/Library/Application Support/Native Instruments/Service Centre
PC - C:\Program Files\Common Files\Native Instruments\Service Center
Then restart Kontakt and add the library.
This should resolve your issue, allowing you to authorise your library once you have restarted Kontakt.

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  • Avatar
    Christian Auer

    I bought the Composers Toolkit, downloaded it; but it is not possible to activate it over "Add Library" in the Kontakt Player (like I did with for example "Symphonic Brass"). If I click the folder "Spitfire Olafur Arnalds Toolkit library" - it says: No library found.

  • Avatar

    Hi Christian,

    Ólafur Arnalds Composer Toolkit is a "Kontakt Full" library, so you cannot add it as a library to Kontakt. Instead, you must access the library by using the "files" menu in Kontakt Full

  • Avatar
    Henrik Budde


    I have created a multi in kontakt 4 with 16 instruments from the percussion library, but after a crash, suddenly all the 16 loaded instruments are gone from the multi rack and it is like a new instance of kontakt just loaded!

    I know I am on old platforms (logic 8 and kontakt 4), but don’t have the money to upgrade right now.

    Can you help in any way? I am on a steep deadline...

    All the best

  • Avatar
    Tommy Lockett

    This is a really bad workaround please fix this, we buy libraries that are not updated and can not be seen in Kontakt as a Library