Microsoft Exchange and Active Directory Blog
The previous article is now a little older, so here is an updated HowTo for installing Exchange 2016 from CU8 on Windows Server 2016. This HowTo is not an update of an existing installation, but a new/first installation on Windows Server 2016. A HowTo for updating Exchange installations ... Read more
After installing Windows Updates on an Exchange 2016 server, OWA stopped working on one of my test servers. The error message "Server error in application /owa" was displayed in the browser: In the event log of the server in question, the event with the event ID 2001 could be seen: [Owa] Failed to load SSL certificate. The event with the ... Read more
New updates have been released for all Exchange Server versions. Exchange 2010 is also included. Click here to download directly: Exchange Server 2016 CU8 Exchange Server 2013 CU19 Exchange Server 2010 UR 19 Click here for details of the changes: Exchange Server 2016 CU8 Exchange Server 2013 CU19 Exchange Server 2010 UR 19 ... Read more
In the event log of an Exchange 2016 server, the following error message with the source MSExchangeApplicationLogic may occur every hour: Source: MSExchangeApplicationLogic Event ID: 3018 Scenario[ServiceHealth]: GetConfig. CorrelationId: 6852d41c-26fb-4ef9-9f7a-ee9d25f780c7. The request failed. Mailbox: Url: https://officeclient.microsoft.com/config16?CV=15.1.1261.36&Client=WAC_Outlook&corr=6852d41c-26fb-4ef9-9f7a-ee9d25f780c7 Exception: System.Net.WebException: The underlying connection was closed: Unknown error receiving... -> System.ComponentModel.Win32Exception: The client and server cannot receive data. Read more
Microsoft already released a security update for Exchange 2013 and Exchange 2016 on 12.12.17. This is not the quarterly CU, but a fix for a vulnerability in Outlook Web Access (OWA). The CVE for the vulnerability can be found here: CVE-2017-11932 | Microsoft Exchange Spoofing Vulnerability The update is rated "Important". Microsoft describes ... Read more
Anyone who discovers the event with the ID 40025 in the Event Viewer of an Exchange Server has no immediate cause for concern, but should take action: Source: MSExchangeIS ID: 40025 Database "Database Name" ("Database GUID") has been offline-repaired (by eseutil.exe) one or more times in the past. However, although this ensures database-level logical consistency and may permit ... Read more
An interesting problem was pointed out to me today. A reader reported the directory "TransportRoles\data\Temp\UnifiedContent" within the Exchange installation directory, which contains a lot of data and keeps filling up the hard disk. I then had a look at my private installation and was also able to find some very old data in the directory in question. Here is a screenshot ... Read more
From time to time I receive emails or inquiries about environments in which Outlook frequently or even permanently asks for login information. Some users and administrators even seem to have come to believe that Outlook's constant requests for user names and passwords are normal. The good news is that the permanent request for user and ... Read more
The concept of "Server Component States" was introduced with Exchange 2013. The Server Component States provide detailed control over the status of the components that make up an Exchange Server. With Exchange 2016, there is only one installable role (mailbox, edge transport not included). However, the mailbox role consists of various components. ... Read more
I have already described the problem in another article: Users receive an undeliverability report (NDR) when trying to send to mailboxes or distribution lists. The field code in the NDR is "550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found'. Here is an example of such an NDR: The problem occurs, for example, when a distribution list is migrated to a shared mailbox ... Read more
