Microsoft is aware of new variants of the class of attack known as speculative execution side-channel vulnerabilities. The variants are named L1 Terminal Fault (L1TF) and Microarchitectural Data Sampling (MDS). An attacker who can successfully exploit L1TF or MDS may be able to read privileged data across trust boundaries.

This article discusses issues after you enable Shared Calendar Improvements as detailed here: Outlook calendar sharing updates. STATUS: INVESTIGATING. The Outlook team is currently investigating the following issues and will update this article when more information becomes available.

Resolves a vulnerability in Windows Explorer that could allow remote code execution if a user visited a specially crafted webpage.

Your application that uses CDC change tables might fail and return an unknown column error if the column is missing. For example, if your column name was <Customer,id>, you might receive the following error message: Msg 207, Level 16, State 1, Line <LineNumber>. Invalid column name 'Customer,id'.

You can work around this issue by taking the following steps: Remove the affected calendar (s) from Outlook Desktop. Enable “Turn on shared calendar improvements” in the Calendar Properties. For information about how to turn on this setting, see Outlook calendar sharing updates. Restart Outlook Desktop.

When you try to share a calendar by using Microsoft Outlook, Outlook on the web, or Exchange Online PowerShell, you receive one or more of the following errors messages. Outlook for Windows - This calendar can't be shared by one or more people.

Fixes an issue in which you receive "SQL Server performance counters are disabled" error message when you move the SQL Server resource from one node to the other in a SQL Server 2014 failover cluster.

Select an article below for how to start sharing. About delegates in Outlook. Open and use a shared a mailbox. Share and access a view-only calendar. Share and access a calendar with edit and delegation permissions.

You can choose to receive email notifications when someone updates an event on a calendar that's shared with you. Receive calendar updates. In Outlook select Settings > Calendar > Shared calendars.

If you select any bug reference ID in the table, a bookmark tag is added to the URL by using the "#bkmk_NNNNNNN" format. You can then share this URL with others so that they can jump directly to the desired fix in the table.