Cannot open some Emails (.msg) with outlook

[kohler1]

Hello,
we are currently experiencing issues while opening certain emails.

Error Message

We save and archive mails via Outlook 365 in the file system as .msg files. Now, when opening one I get an error: “… cannot be opened. File might be opened or you do not have permissions”.

This seems very odd. We use a Synology as our NAS. I can open other files too, the described problem only occurs in some places.

What we tried

• manually copied the same file to a different place via the File Station by Synology…and was able to access the file
• Mounting the Drive not via Netdrive, but as a smb network drive in explorer (same credentials) - we could open the file

Setup

• Synology DS718+
• Netdrive 3 connected via WebDav
• Mailapp: Outlook 365

I am not seeing anything obvious in the logs and have no clue how to fix this issue.

[tsjeong]

Dear kohler1,

Thank you for using NetDrive.

After setting the log level to VERBOSE, please reproduce the problem and send us the debug log file :

How to attach a log file

1. Change Log Level First, check your settings and change log level to VERBOSE. 1A. If you cannot login At your login screen: [image] Click SETTINGS at the lower right corner. Change Log level to VERBOSE and go back to login screen to apply the change: [image] 1B. If you can login Go to Settings: [image] Change log level to VERBOSE: [22] Set to DEBUG if you use old version because there is no VERBOSE log level. Go back to DRIVES screen. Changed log level takes effect when you leave …

There is no login related credential information in the log files.

Sorry for the inconvenience it may caused.

Regards.