Mouse pointer changes into a black box when moved over blank areas in a PDF document

If your mouse cursor changes into a black box when moved over blank areas in a PDF document, use the solution below as a workaround.

The problem is intermittent in nature, and reported for the May 2016 release of Acrobat Reader and Acrobat.  

Solution: Remove the icon cache file

Adobe is working to resolve the issue. Meanwhile, follow these steps as a workaround:

1. Open the local appdata folder: 
   C:\Users\<user name>\AppData\Local\Adobe\Acrobat\DC
2. Delete the following file in the local appdata folder:
   • For Acrobat Reader: IconCacheRdr.dat
     
   • For Acrobat: IconCacheAcro.dat
3. Relaunch Acrobat Reader or Acrobat.