Error 16 On Launch

Hello. I keep getting the following at random times but usually when I boot my computer and try to launch WoW:

The CAS system was unable to initialize: Tact instance creation failed. Error (16): container locked.

How to a get rid of this error? It started happening a few months ago, again at random times. Now it is every time I reboot or turned my computer on when I get home from work. I am running Win 11.

I turn off, or do not let Battle.net to start until I start it from the desktop icon.
In other words…
Do not start Battle.net on startup of computer… Is a option inside battle.net menu.

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