Hi @igordugonjic,
Set the following value in registry:
key: HKLM\SOFTWARE\Wow6432Node\Policies\Adobe\Acrobat Reader\DC\FeatureLockdown
dword: bAcroSuppressUpsell
value: 1
For more help please check : https://community.adobe.com/t5/enterprise-teams-discussions/adobe-acrobat-reader-dc-disable-start-free-trial/td-p/10323511
You can also puchase subscription to get rid of the advertisement. For detailed information, you may refer to Answers to some of the most frequently asked questions about Acrobat DC
If you wish, you may download the freeware Adobe Reader desktop application to view, sign, annotate and print PDF file Adobe Acrobat Reader DC FAQs
There is no such option available to remove the Adobe ID sign in and subscribe pop-up from an expired trial version of Acrobat.
Feel free to update this discussion for any further assistance.
Regards,
Ria