Acronis True Image 2021 (Mac): repeated restart request after installation

Symptoms

Acronis True Image 2021 repeatedly asks for a restart after installation on macOS 11 Big Sur:

To run Acronis True Image, you must restart your Mac.

Cause

macOS prevents one of Acronis True Image kernel extensions from loading.

Solution

Delete records about kernel extensions from KextPolicy table in macOS Recovery:

1. Boot into macOS Recovery: restart Mac and hold Command (⌘)+R 
2. Open Terminal from the Utilities menu.
3. Change the current directory to the root of the system volume. Usually, its name is "Macintosh HD" or "Mac HD".

   cd "/Volumes/Macintosh HD"

4. Launch sqlite3:

   ./usr/bin/sqlite3

   Note the period . at the beginning of this command and commands in the next steps
5. Open the KextPolicy database:

   .open var/db/SystemPolicyConfiguration/KextPolicy

6. Enter the following queries and confirm their execution with the Enter key:

   DELETE FROM kext_load_history_v3 where team_id = 'ZU2TV78AA6';
   DELETE FROM kext_policy where team_id = 'ZU2TV78AA6';

7. Quit sqlite3 with the following command and reboot the Mac:
   .quit