https://community.blueprism.com/t5/Product-Forum/PDF-not-opening/m-p/92962#M42638 I am currently in a POC where we are using the POP3/SMTP business object to download attachments from emails using an Outlook account. When I receive PDF attachments from sender A on the windows BP Server and try to open them I receive the following error:  "Acrobat could not open '[name of file]' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded)." When I try to open the same attachment on my local machine, I do not get this error.   Furthermore, when I receive PDF attachments from sender B on the windows BP Server and try to open them following the same methodology, they open successfully. My current idea is that sender B is a known contact and sender A is not so the attachments are not being marked as trusted. Am I correct? Has anyone seen anything similar to this issue? Any advice would be helpful.    Thank you in advance. Tue, 27 Feb 2018 23:31:00 GMT ThomasValiyapar 2018-02-27T23:31:00Z https://community.blueprism.com/t5/Product-Forum/PDF-not-opening/m-p/92962#M42638 I am currently in a POC where we are using the POP3/SMTP business object to download attachments from emails using an Outlook account. When I receive PDF attachments from sender A on the windows BP Server and try to open them I receive the following error:  "Acrobat could not open '[name of file]' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded)." When I try to open the same attachment on my local machine, I do not get this error.   Furthermore, when I receive PDF attachments from sender B on the windows BP Server and try to open them following the same methodology, they open successfully. My current idea is that sender B is a known contact and sender A is not so the attachments are not being marked as trusted. Am I correct? Has anyone seen anything similar to this issue? Any advice would be helpful.    Thank you in advance. Tue, 27 Feb 2018 23:31:00 GMT https://community.blueprism.com/t5/Product-Forum/PDF-not-opening/m-p/92962#M42638 ThomasValiyapar 2018-02-27T23:31:00Z