Forum Discussion

Copper Contributor

Jul 06, 2023

How to hide file extensions in outlook

Hi there. I need to hide somehow file extension not only in File Explorer, but in Outlook also. When composing new email I insert attachment via Attach File. In this window file extensions are hi...

Victor_Ivanidze

Bronze Contributor

Jul 06, 2023

No way. May I ask why do you need it - a bit strange requirement IMHO.

Copper Contributor

Jul 06, 2023

I don`t know how, but some users of our com add-in have these extensions hidden in new email window. It can cause issues while processing attached to email documents, as we take display_name for processing.

Victor_Ivanidze
Bronze Contributor
Jul 06, 2023
Can you modify your COM add-in to just ignore the extension?
- TarasNehrov
  Copper Contributor
  Jul 06, 2023
  Unfortunately, no. Problem occurs when some other com add-ins interact with attachments before ours.
  For example - Mimecast Large File Send functionality - you past big attachment via Mimecast, and its attached as a link. However, they retain the full name of the file, so for example in my environments it looks like FileName.originalExtension.lfs.
  In customer env it is past like FileName.originalExtension. .lfs is hidden/not shown, and our add-in processes it as pdf file(and it obviously leads to corruption of the file).
  - Victor_Ivanidze
    Bronze Contributor
    Jul 07, 2023
    TarasNehrov
    Sorry I don't catch your point.
    in my environments it looks like FileName.originalExtension.lfs.
    In customer env it is past like FileName.originalExtension. .lfs is hidden/not shown, and our add-in processes it as pdf file
    
    But the original extension is pdf, correct? Why abscence of .lfs extension prevents you to do what you want?

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