Android Studio Update: Some conflicts found in installation area
This is another option, it is not much easier than reinstalling but at least you don't have to worry about your settings getting lost
- Go to help->about and note the version you currently have installed
- Download zip file for your current version at https://developer.android.com/studio/archive
- Manually overwrite conflicted files with files from zip
- Update normally
I know this is an older question but I encountered the same error while updating SDK components in Android Studio 2.3.3. I was able to fix the problem by starting the SDK manager and un-checking the components that showed the error and clicked "Apply". That un-installed just that component. When it was finished, I re-checked the component and clicked "Apply" again. When it was finished, the problematic component was updated to the newest version. This was much quicker than doing a full un-install/re-install as stated in one of the solutions above.
Hope this helps someone.