Error code 184 when installing InDesign

My Indesign has not worked properly so I wnated to reinnstal the app but get this errormessage :

Exit Code: 184

-------------------------------------- Summary --------------------------------------

- 2 fatal error(s), 0 error(s), 2 warnings(s)

FATAL: Error (Code = 184) executing in command 'MoveFileCommand' for package: 'AdobeInDesign12IconHandler32-mul', version:12.0.0.081

FATAL: Error occurred in install of package (Name: AdobeInDesign12IconHandler32-mul Version: 12.0.0.081). Error code: '184'

WARN: idicon.dll

WARN: Unable to move file at "C:\adobeTemp\ETRE1D9.tmp\61\AdobeInDesign12IconHandler32-mul\AdobeCommon\Shell\CC.2017\idicon.dll" to "C:\Program Files (x86)\Common Files\Adobe\Shell\CC.2017\idicon.dll" Error 32 Prosessen får ikke tilgang til filen fordi den brukes av en annen prosess.. Try setting correct permissions to the specified file/folder or parent folder, so that admin has rights to modify it.

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What do I do now?