virtualbox.org

I run as a guest Win 10 LTSC 2019 (1809) 64bit activated with my organization.

PROBLEM:

Since late July (i.e. more than a month ago), I have had repetedly failings in windows security updates (some other updates were ok). During the re-boot, and towards the end of the installation (97% or so), there is an interruption. The OS re-boots again to reverse back the guest OS, with the notice: impossible to complete the update(s).
In windows update settings I see in these updates error 0x800f0922, while in application Events I notice a warning, besides the mentioned error, in failing to update the token of the product key.
In settings Windows, however, info says that the system is activated, without any error or warning.

Initially I thought it was a problem of the virtual HD space (only 5GB left). I increased its size, but the problem persists.

QUESTION:

I tend not to update VirtualBox, if it works ok, as it seems it does. So I am still with version 6.1.26 on Win 10 Pro (64bit) host. Could a VB version not fully updated (with its Guest Additions) be the cause of such a problem?

Thank you.

I try to answer, after several checkings, my own question.

No VB version is not - in this case at least - the culprit.

The problem was in the Win Defender service that did not want to start, even if I was asking so in settings.
I run from cmd (admin privilegies) this restart: and afterwards win update has installed - so it seems for now - the files without failures.

Still curious to know if having a VB not fully updated could cause sometimes problems to some win updates.