here are some fixes from MS though not sure how you would do some within experience:
https://support.microsoft.com/en-au/help/2669244/-windows-cannot-access-the-specified-device,-path,-or-file-error-when-you-try-to-install,-update-or-start-a-program-or-file
I found 1 person with same error on Nvidia forums but no solution.
Have you tried restarting PC and trying again?
try running it as admin
try removing geforce experience and re download a new copy as see if that helps
https://devtalk.nvidia.com/default/topic/802771/general-graphics-programming/i-can-t-install-geforce-experience/2