Adobe Reader DC 21.001.20138.29261 prompts for log in spontaniusly and on send mail

[The Sweede]

My Adobe Reader DC 21.001.20138.29261 shows a login dialog for end user spontaneously

User can close but are annoying.

But pressing the Send mail Share file or Share link buttons the login dialog also shows up, and you have to login to use these buttons.

How can this be fixed by

FeatureLockdown (Lockable Settings) on HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Adobe

or is there a Current User setting to apply

Regards

Stefan Jørgensen