installed Thunderbird after O365; Mail to: functions now default to Thunderbird rather than Outlook
I have both Outlook and Thunderbird on my laptop, one for business, the other personal use.
I need MS productivity suite to default to using Outlook, not Thunderbird; How to I revert the registry settings or other?
I have both Outlook and Thunderbird on my laptop, one for business, the other personal use.
I need MS productivity suite to default to using Outlook, not Thunderbird; How to I revert the registry settings or other?
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Is this Windows 10?
I'd start by looking at the system default.
Start→PC settings→Apps→Default Apps
I'm a bit surprised because my experience is that regardless of any settings to the contrary, if I ever run Outlook it sets itself as the default mail client, and I have to re-set Thunderbird as the default.
In your position, you should probably switch off the settings in Thunderbird to have it check if it is the default. It seems to me that you need Outlook to be the default.