Appears to be a 'one-off' situation where an APP I've used for many years to send reports (a PDF file) works fine on 2 of my 3 Dell Latitude laptops. But can't get a proper operation on one laptop. All three laptops have new/fresh/clean installations of Windows 10 Pro with all current updates. I did a scrub of the SSDs and a clean install rather than upgrades. Default e-mail clients have been switched back/forth between Outlook-2016 and Thunderbird-32.8 and selecting individual files and using the right-click / send-to command works fine and the currently selected default e-mail client is utilized (be it Outlook or Thunderbird). The APP I've used for inspection report generation for now over 15 years and has been updated and refreshed many times and there are updates many times each year. I've also down testing for the developers of this APP on many alpha and beta releases.

What I've noticed (since the 1803 Windows update) is that on one of my laptops (Dell Latittude E5430) when I have the APP generate and send a report it always brings up Outlook as the client. Even if Thunderbird is set as the default. I've also set defaults by protocol and extension. During this same time I can right-click on a file and send-to and it will bring up the default I've selected as Thunderbird. When testing this same routine on my other two laptops (Dell D830 and Dell E6420) the approprite default e-mail client is selected by the APP I've used for my reports and all other files selected as a 'send-to'. I'm thinking I must have some switch toggled in the Windows 10 Pro installation on this laptop - Dell D5430 that I can't recall or find. Or there is something set or not set in the registry that seems to want to always route this particular APP to send-to Outlook.

No matter what the default e-mail client is. And, as noted, this same APP works just fine on my other two laptops. Why one new/fresh/clean installation will be different is beyond me. I've been searching and trying to come up with a solution, but so far.

Here is the key for setting the default email client: HKEY_LOCAL_MACHINE Software Clients Mail. If you drop down to this in the registry, you can see that the ‘default’ value on the right is what sets the default email client. Lira sapr 2015 torrent. Now, obviously the email client must exist for you to set it.

'zip, nada, nothing'. BTW, this same installation on this laptop (Dell E5430) would not let the Directory Opus (file manager) add two registry entries it needed for complete operation of that APP. I had to manually add those entries to get Directory Opus fully operational. Makes me wonder why one W-10 Pro installation would do such and the other two not have any problems? Always something it seems. If anyone has any hints I'll give most anything a try.

On the problem laptop, what happens if you create and log in as a new user for test purposes, and then try? I'm wondering if somehow you have a permissions problem in part of your registry e.g. For the current user, given your comment about DOPUS.

In each laptop, does the user have the same rights? Also please confirm you have nothing synced (with another device) that might affect your settings.On the problem laptop.

I get same results with a 2nd profile with admin privileges. My other two laptops all have a single admin user.

Ergo all settings/privileges the same. I don't do any syncing with any other devices.