Em client says it is not the default when it is

why does em client say it is not the default app when it shows that it is in my windows settings

eM Client will report it is not the default when not all the defaults are set.

In your Windows Settings go to Apps > Default Apps > Set defaults by app.

Find eM Client and click on Manage.

Set all the defaults to eM Client.

I have the same problem, can you solve it?

Did you set all the options in your Windows settings?