Messages saved on the disk as .msg files cannot be opened when Outlook is running

  • Thread starter Thread starter Zvi Dan
  • Start date Start date
Z

Zvi Dan

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Hi,

I'm using desktop Outlook-365 app (MSO, version 1908, build 11929.20606 Click-to-Run) on Win10 (on laptop).

During long time I used several messages, saved on local disk as files .msg: double-click on these files caused their opening by Outlook.
For some reason, from today this behavior has changed: double-click is NOT followed by its opening, nothing happens !

BUT: if Outlook app doesn't run, double-click on file .msg does open it ! If I try to open Outlook app, when .msg file is open, the Outlook app doesn't launch !

So: if Outlook app is running, .msg file cannot be open. If .msg file is open, Outlook app cannot be launched.

I assume, that it began after some OS or Outlook update, but I cannot guess what update caused the problem.
By the way, disabling all COM-based plugins didn't fix this problem...

Any idea ?

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