I have made an outlook add-in that saves e-mails to a document folder through


Sometimes, the email doesn't get saved, and show below error.

Error:The operation failed.

If I open a windows explorer to \\mysite\mylist\, then all subsequent emails are saved.

This is a very peculiar issue!!

My workaround is to 'forcibly' open a connection to Sharepoint and if there's an error, well deal with it manually:

string[] ss = Directory.GetFiles('\\mysite\mylist\');

and if it doesn't work:


So, I wonder if someone has come up with that issue and other workarounds.

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