If you received "Pse87zip" from an unknown source or found it in a system folder, exercise caution before opening it:
The "Pse" prefix is frequently used as an abbreviation for .
Right-click the file and run a scan with your antivirus software (like Microsoft Defender).
Double-click the file to automatically unzip it using the Archive Utility.
If you recently downloaded a trial or update for Photoshop Elements, "Pse87zip" could be a specific build or patch (e.g., "PSE version 8.7").
Check your or Adobe installation folders to see if it is part of a larger software package.
Could you provide more on where you found this file or what you are trying to achieve with it?