Outlook Desktop is leveraging OWA Powered Experiences (OPX) which are not available because OWA has been disabled. This issue may occur for instances where OPX controls are being used including the new Room Finder and the new Notifications Pane.

Users see a blank webpage after they try to log in, or the login process goes into a loop. This occurs if users are accessing the servers through a load balancer, and not all servers in the pool are updated to at least the July 2021 security update. This condition may cause users to be redirected back to the login page when they use OWA or ECP.

In the Features (center) pane you should see the URL Rewrite feature in the IIS area.If you do not see it, the feature might not be installed. In this case, you can download the installation package from URL Rewrite: The Official Microsoft IIS Site.This installation does not require a restart.

Symptoms. After you install a service pack on a server that is running Microsoft Exchange Server 2010 or Exchange Server 2007, you may experience one or more of the following issues:

Symptoms. Consider the following scenario: A user connects to the Exchange Admin Center (https://<ExchangeCAS>/ECP) on a Microsoft Exchange Server 2013 Client Access Server (CAS) with Forms-Based Authentication disabled.

In this scenario, when a user in a child domain logs into Outlook Web App (OWA) and tries to change language by selecting Settings > Options > General > Region and time zone > Language, and then selects the check box next to Rename the default folders so their names match the specified language, the language can't be changed, and the default folder names mismatch the specified language.

After you install the July 2021 security update for Microsoft Exchange Server 2019 and 2016, users can’t sign in to their mailboxes by using Outlook on the web (OWA) or Exchange Control Panel (ECP). The issue occurs if the server authorization certificate is either expired or not present. Resolution

Users see a blank webpage after they try to log in, or the login process goes into a loop. This occurs if users are accessing the servers through a load balancer, and not all servers in the pool are updated to at least the July 2021 security update. This condition may cause users to be redirected back to the login page when they use OWA or ECP.

If the OWA site was ever loaded through https://domain/owa, the user may have to clear the corresponding cookie on the browser. This is one-time cleanup task. This is one-time cleanup task. To verify that users are sending an updated cookie, open the Exchange Management Shell on the server that has the CA role, and then run the following command:

Wechseln Sie unter Benachrichtigen zu dem Abschnitt E-Mail, und legen Sie die Umschaltfläche auf Aus fest, wenn Diese Benachrichtigungen nicht angezeigt werden sollen.. Um Benachrichtigungen zu aktivieren, legen Sie die Umschaltfläche auf Ein fest, und erweitern Sie den Abschnitt E-Mail.Wählen Sie aus, wie Ihre Erinnerungen angezeigt werden sollen und ob ein Benachrichtigungssound angezeigt ...