Recover grub after windows update

Run this in Windows as an administrator:

bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi

Or:

bcdedit /set "{bootmgr}" path \EFI\ubuntu\grubx64.efi

If you are using PowerShel.

View expiration date of DNSSEC signature

  dig SOA yourdomain.com @nameserver +dnssec  

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