Adobe Reader Mouse pointer changes into a black box (Solved)

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 DC: IconCacheRdr.dat
     
   • For Acrobat DC: IconCacheAcro.dat
3. Relaunch Acrobat Reader DC or Acrobat DC.

Note: Before clearing the cache file you must close Adobe Reader which is very important or the issue will still exist.

Desktop offline issue (Not solved)

My desktop PC offline frequently. Try many ways to fix it but no good news. Such as changing power saving option, USB power option, etc. Will Try more method to figure it out.

At first, I will try to connect my pc to 4G network to see if router issue. Then will update here to see how to do next step.