Hi when there will be a fix released for the printing problem in IE for the windows 10 2004 feature update and newer.
There is workaround to turn off the protected mode within Adobe or to save the file and open it from another location but both options are not a real solution to this problem.
This buq is still open for a long time but installing latest updates for Adobe and windows does not fix this issue.
https://helpx.adobe.com/acrobat/kb/known-issues-acrobat-dc-reader.html
Problem: Unable to print using IE for latest Win 2004 update when only Reader is installed. [ADC-4304271]