Help with Toolchain manager install

The toolchain manager experienced an unrecoverable error. 

First install. Please help. 

EPERM: operation not permitted, mkdir 'C:\ncs'

Error: EPERM: operation not permitted, mkdir 'C:\ncs'
    at mkdirSync (fs.js:987:3)
    at Object.e.mkdirSync (electron/js2c/asar_bundle.js:5:12191)
    at Object.mkdirsSync (C:\Users\adago\.nrfconnect-apps\node_modules\pc-nrfconnect-toolchain-manager\node_modules\fs-extra\lib\mkdirs\mkdirs-sync.js:31:9)
    at B.default (C:\Users\adago\.nrfconnect-apps\node_modules\pc-nrfconnect-toolchain-manager\dist\bundle.js:18:34450)
    at V (C:\Users\adago\.nrfconnect-apps\node_modules\pc-nrfconnect-toolchain-manager\dist\bundle.js:45:137791)
    at C:\Users\adago\.nrfconnect-apps\node_modules\pc-nrfconnect-toolchain-manager\dist\bundle.js:45:136578
    at os (file:///C:/Users/adago/AppData/Local/Programs/nrfconnect/resources/app.asar/dist/app-bundle.js:40:83208)
    at yl (file:///C:/Users/adago/AppData/Local/Programs/nrfconnect/resources/app.asar/dist/app-bundle.js:40:102287)
    at t.unstable_runWithPriority (file:///C:/Users/adago/AppData/Local/Programs/nrfconnect/resources/app.asar/dist/app-bundle.js:48:3844)
    at zo (file:///C:/Users/adago/AppData/Local/Programs/nrfconnect/resources/app.asar/dist/app-bundle.js:40:45023)



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