Hello. Since yesterday, our users cannot open files attached to the notes entity (annotation) when using IE11. They can open these attachments from Outlook or from other browsers (we've tried Firefox).
When they try to open an attachment, it gives them the error "Invalid action" with the Retry/Close buttons with no additional details. When they click retry, they'll instead get 404 - file or directory not found.
There was no configuration change AFAIK.
The above seems to suggest it's a problem with IE, not permission issue in CRM.
The CRM URL is added to the local intranet zone and as noted above, this worked 2 days ago for all users.
Server: CRM 2013 SP1 (6.1.3.119)
Any clues where to look?
Thanks in advance
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