Microsoft has now fixed the issue that was preventing Outlook users on the web from searching their emails, which it said was due to a recent service update that caused a configuration issue.
Outlook web RSS
Microsoft has blocked a raft of file extensions from being downloaded by Outlook web users. The firm said that organisations can manually whitelist any file extension types if they need them.
Dark mode, one of Outlook.com's newer features, was a tad lacking in terms of customization upon release. This seems to now be in the process of being rectified with the introduction of themes.