Search feature not working

This seems to have fixed the 'Desktop Seach on Windows' issue by me. 

Credit: Superuser.com - Windows 7 Index Search does not work in Google Drive folder

In short: (Detailed instructions after this)

1. Make sure that the 'SYSTEM' user/group has full permission access to your 'Dropbox' folder. (In 'Properties'>'Security')
2. Make sure that Windows can index the 'Dropbox' folder contents. (In 'Properties'>'General'>'Allow files in this folder to have contents index in addition to file properties')
3. You may also have to rebuild your Windows search index.

Detailed instructions: 

1. Navigate to the folder that contains your 'Dropbox' folder. (This is usually 'C:\Users\<Username>)
2. Right-click on the 'Dropbox' folder, and click properties, then click the 'Security' tab. 
3. Under 'Group or user names:' make sure that 'SYSTEM' is in the list. (If 'SYSTEM' isn't in the list then you need to add it by clicking 'edit'>'add'>'Advanced'>'Find Now', select 'SYSTEM' from the search results, and click 'OK'>'OK'>'OK')
4. Select 'SYSTEM' in 'Group or user names:' (the top big box).
5. Look under 'Permissions for SYSTEM', and make sure that there aren't any checkboxes under 'Deny'.
6. If there are checkboxes under 'Deny' then you need to click the edit button, uncheck all checkboxes under 'Deny', then click 'OK', then again 'OK'. Windows will now apply the permission to your 'Dropbox' folder. This can take an hour or more depending on how large your Dropbox is, so be patient. 
7. You can also go to the 'General' tab (in the same properties of the 'Dropbox' folder as before), click 'Advanced' and make sure that the checkbox by  'Allow files in this folder to have contents index in addition to file properties' is checked. 
8. You may also have to 'Rebuild your Index', here's a guide for this: How to Solve Windows Search Issues with an Index Rebuild - tekrevue.com/tip. 

Please reply if this worked for you, thanks.