Update fail on two out of three laptops

We have 3 laptops covered with Bitdefender. One Win 10 machine updates correctly. The other Win 10 laptop will not auto update (error codes 1011 or 1004) and the third laptop (Win 7) has stopped updating ( same error codes). Any suggestions would be welcome. Have checked Windows Firewall - the "healthy" Win 10 laptop does not have any Bitdefender components listed in permitted apps but updates correctly. The other Win 10 has Bitdefender components as permitted apps but won't update.

Interestingly, the second Win 10 machine won't install Windows updates in the last few days. This unit is only 10 days from new.

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