Update error, HotS cannot start

Bug Report
1

I see HotS update available, but after start update Battle.net show modal dialog with this text:

“We couldn’t access a folder. This is usually because you’re not logged in as an administrator. More help: BLZBNTAGT0000084B”

I haven’t changed anything in Windows 10 or Battle.net.

All of these things didn’t help:

  • Starting Battle.net as Admin
  • Starting HotS repair (not started, the same error happens)
  • Clear installation of Battle.net
  • Clear installation of HotS (not started, the same error happens)

Blizzard, please help.

2

This issue is not a game bug. Installing and patching falls under Technical Support as per its description:

You can move your thread to Technical Support forum by editing your post and changing the forum in the dropdown menu beside the thread title.

Try the troubleshooting steps including the advanced ones and mention what ones you did: BLZBNTAGT0000084B