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Exchange Team Blog

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79.2K

Released: March 2023 Exchange Server Security Updates

The_Exchange_Team on Mar 14 2023 10:00 AM
We have released Security Updates for Exchange Server 2013, Exchange Server 2016, and Exchange Server 2019.
3,844

Exchange Server 2013 Reaches End of Support Next Month

The_Exchange_Team on Mar 10 2023 10:26 AM
Exchange Server 2013 reaches End of Support on April 11, 2023!
6,019

Deprecation of Remote PowerShell (RPS) for New Exchange Online Tenants

The_Exchange_Team on Mar 07 2023 08:25 AM
Today, we are announcing that starting April 1, 2023, we will start blocking RPS connections for all tenants created on ...
5,100

Troubleshooting Compliance Retention Policies in Exchange Online

The_Exchange_Team on Feb 27 2023 01:53 PM
In this post, we dig into Exchange Online Compliance Retention Policies and identify issues that you may encounter.
29.2K

Update on the Exchange Server Antivirus Exclusions

The_Exchange_Team on Feb 23 2023 12:21 PM
We are announcing a change in recommended AV exclusions on Exchange servers.
6,669

Troubleshooting Retention Policies in Exchange Online

The_Exchange_Team on Feb 22 2023 12:31 PM
In this post, we delve into Exchange Online Retention Policies and identify issues that you may encounter.
21.5K

Cloud-based Message Recall in Exchange Online

The_Exchange_Team on Feb 16 2023 08:34 AM
Today we’re thrilled to announce that the new Exchange Online Message Recall feature has arrived!
96.4K

Released: February 2023 Exchange Server Security Updates

The_Exchange_Team on Feb 14 2023 10:00 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
8,518

Exchange Server 2013 End of Support Approaching Fast

The_Exchange_Team on Feb 13 2023 01:38 PM
Exchange Server 2013 reaches End of Support on April 11, 2023, which is less than 60 days away!
28.2K

Protect Your Exchange Servers

The_Exchange_Team on Jan 26 2023 01:08 PM
We’ve said it before, we’re saying it now, and we’ll keeping saying it: it is critical to keep your Exchange servers upd...
13.9K

Introducing Support for Concurrent Exchange Online License Assignments

The_Exchange_Team on Jan 20 2023 06:54 AM
We recently enabled a new feature in Office 365, which allows tenant admins to assign more than one Exchange Online lice...
11.7K

Help us Improve the Exchange Server Update Experience

The_Exchange_Team on Jan 19 2023 11:40 AM
We’re looking into ways in which we can improve the experience of installing Exchange Server Cumulative Updates (CUs) an...
7,171

Content Search for Targeted Collection of Inactive Mailbox Data

The_Exchange_Team on Jan 18 2023 12:52 PM
How can you use Content Search to retrieve Inactive mailbox data? Read on!
10.4K

Exchange Server 2013 End of Support Coming Soon

Scott Schnoll on Jan 12 2023 11:40 AM
Exchange Server 2013 will reach End of Support on April 11, 2023, which is less than 90 days away!
90.2K

Released: January 2023 Exchange Server Security Updates

The_Exchange_Team on Jan 10 2023 10:01 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
16.2K

New opt-in endpoint for POP3/IMAP4 clients that need legacy TLS

The_Exchange_Team on Jan 06 2023 07:17 AM
We have created an opt-in endpoint for POP3/IMAP4 clients still requiring TLS1.0 and TLS1.1.
112K

Basic Authentication Deprecation in Exchange Online – Time’s Up

The_Exchange_Team on Dec 20 2022 11:19 AM
In early January 2023, we will permanently turn off Basic auth for multiple protocols for many Exchange Online tenants.
53.4K

Announcing Deprecation of Remote PowerShell (RPS) Protocol in Exchange Online PowerShell

The_Exchange_Team on Dec 15 2022 07:06 AM
Today, we are announcing that starting June 1, 2023, we will start blocking RPS connections to Exchange Online and will ...
10.7K

Notes from the field: Using app-only authentication with customized RBAC roles in Exchange Online

The_Exchange_Team on Dec 05 2022 07:33 AM
Switching non-interactive Exchange Online PowerShell logons to OAuth.
14K

Announcing Public Preview of Role Based Access Control for Applications in Exchange Online

The_Exchange_Team on Dec 01 2022 02:58 PM
Today, we are excited to announce the Public Preview of Role Based Access Control for Applications in Exchange Online.
8,862

Outlook REST API v2.0 and Beta deprecation update

The_Exchange_Team on Nov 23 2022 07:16 AM
We wanted to provide an update on Outlook REST API v2.0 and Beta deprecation.
30.7K

Basic Authentication Deprecation in Exchange Online – What’s Next

The_Exchange_Team on Nov 16 2022 01:40 PM
We wanted to let you know about the next chapter in our retirement of basic authentication in Exchange Online.
17K

Servicing Exchange Server

The_Exchange_Team on Nov 15 2022 12:03 PM
We wanted to provide several updates related to servicing Exchange Server.
105K

Released: November 2022 Exchange Server Security Updates

The_Exchange_Team on Nov 08 2022 10:00 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
19.3K

Deprecating Conversion of Distribution Lists to Microsoft 365 Groups

The_Exchange_Team on Nov 03 2022 08:43 AM
We are deprecating the toolkit for migrating Distribution Lists to Microsoft 365 Groups on February 1, 2023.
25.8K

Cross-tenant User Data Migration is Now Generally Available

The_Exchange_Team on Nov 01 2022 03:43 PM
Today, we’re thrilled to announce that cross-tenant user data migration is now generally available.
11K

Deprecating bad item limit and large item limit migration parameters

The_Exchange_Team on Oct 13 2022 06:48 AM
The time has come to fully deprecate Bad Item Limit / Large Item Limit migration parameters and use DCS to measure and g...
60.5K

Released: October 2022 Exchange Server Security Updates

The_Exchange_Team on Oct 11 2022 10:02 AM
We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019.
25.5K

Use Authentication Policies to Fight Password Spray Attacks

The_Exchange_Team on Oct 03 2022 02:19 PM
You should read this post if basic authentication is in use in your tenant for any protocol.
189K

Exchange Online email applications stopped signing in, or keep asking for passwords? Start here.

The_Exchange_Team on Oct 01 2022 07:30 AM
If your email clients stopped signing in starting October (as we disable basic authentication in Exchange Online) - this...

Latest Comments

Dennisdsmolinski
in Released: March 2023 Exchange Server Security Updates on Mar 20 2023 07:08 AM
After installing the March Windows Server update and the Exchange 2016 March Security Update, new mail notifications stopped working for Blackberry Works iOS devices. A case was opened and the Microsoft Engineer said other customers also had issues with the SU (not sure with what). The recommended a...
0 Likes
Nino Bilic
in Released: March 2023 Exchange Server Security Updates on Mar 20 2023 06:43 AM
@rsc Yes. I do not know that the second question can be answered deterministically for all customers the same way because of various variables involved. I have heard of people running 3-4 instances. Also note that we are working on an updated version of the script that should be significantly faster...
0 Likes
rsc
in Released: March 2023 Exchange Server Security Updates on Mar 20 2023 06:31 AM
@Nino Bilic I have already seen the FAQ link you have provided regarding batching, but it does not answer my specific questions: If running the script in batches, can we run multiple instances of the script at the same time in different PowerShell windows or will this cause throttling errors?If we c...
0 Likes
Nino Bilic
in Released: March 2023 Exchange Server Security Updates on Mar 20 2023 06:21 AM
@R_Cay I don't get it. You described your scenario as someone who has Outlook and does not run Exchange Server on-premises (and your post implied that you are not the tenant admin for an Exchange tenant). I then answered that all you need to do is update Outlook. If I misunderstood your scenario - w...
0 Likes
Nino Bilic
in Released: March 2023 Exchange Server Security Updates on Mar 20 2023 06:14 AM
@rsc Script batching is documented in the script FAQ: https://microsoft.github.io/CSS-Exchange/Security/CVE-2023-23397/FAQ/ @CSHSYSADMIN I take it that by "this security update" you mean "Outlook security update"? In that case, please see this blog post as we say "To address this CVE, you must insta...
0 Likes