Yes, it sounds like something in windows is, ahem, bust!
As I say this works for me on windows 7. Though as mentioned before I get the problem you get on Dropbox dialogue boxes. I'd imagine in both of these cases some obscure dll files are deregisterred or something like that.
Brian
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----- Original Message ----- From: "Don H" <lmddh50@...>
To: <nvda@nvda.groups.io>
Sent: Friday, December 07, 2018 5:04 PM
Subject: Re: [nvda] NVDA reading dialog boxes

Reboot doesn't fix the issue.  Ironic that NVDA doesn't read the dialog boxes it generates.

On 12/7/2018 10:56 AM, Brian's Mail list account via Groups.Io wrote:

Try rebooting the machine. I've seen this too but no idea why it comes and goes though I use windows 7. i I have a feeling its a windows issue.
Brian

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----- Original Message ----- From: "Don H" <lmddh50@...>
To: <nvda@nvda.groups.io>
Sent: Friday, December 07, 2018 1:54 PM
Subject: [nvda] NVDA reading dialog boxes

Running latest beta of NVDA on a Win 10 1809 system.
while in the NVDA UI if I go to help then about NVDA does not read the dialog box it only says OK. If you open up the check for updates or addon updates NVDA only says close where I thought it always said No updates available in the past