Adobe cannot open the file attachment because your pdf file attachment settings do not allow

When an attachment is placed in Acrobat, it is automatically zipped, so there's no need to do this beforehand.

@it_8499 if you have already tried what was suggested in that post and nothing worked, I would suggest asking your IT team. I know at my workplace, certain files we can't download. Some of us are using VPN, and some aren't, but this error message may indicates that your organization's security policies are preventing you from accessing the file. This is typically due to restrictions set by your IT department to protect sensitive data. The most direct solution is to contact your system administrator or IT support team. They can explain the specific policy in place, determine if the file should be accessible, and potentially adjust the policy or provide you with an alternative method to access the document. In some cases, they might need to move the file to a different location or grant you specific permissions. If the file is legitimate and necessary for your work, they can help you navigate the restrictions and ensure you can access it securely.