Fix for this issue is now available in the latest update of InDesign 2020 – that is, InDesign 15.1.2
In the Creative Cloud Desktop application, click on the Updates section on the left. You should be able to see the Update available for InDesign. Please update your InDesign application to this version to try out the fix.
Let us know in the comments section if you still face this problem.
Adobe InDesign Teamlefu supported this idea ·
An error occurred while saving the commentlefu commented
Mac OS. After update to 188.8.131.52 we still have the same problem to overwrite PDFs on SMB shares. InDesign seems to hold the exported PDF open until you fully close InDesign.