Summary. Starting in the January 2023 security update (SU) for Microsoft Exchange Server, we introduced a new feature that enables admins to configure certificate-based signing of PowerShell serialization payloads. This feature has to be manually enabled by an Exchange Server admin after the SU installed on all Exchange-based servers.

Summary. Certificate-based signing of PowerShell serialization payloads was introduced in the January 2023 Exchange Server Security Update. By default, the feature was released as disabled (opt-in) and had to be enabled by the Exchange Server administrator. By installing the November 2023 (or later version) Exchange Server Security Update, the ...

Symptoms. When you try to access a mailbox search in Exchange Control Panel (ECP), the Get-MailboxSearch task fails and returns the following error message: Microsoft.Exchange.Diagnostics.BlockedDeserializeTypeException: Deserialization of type System.UnitySerializationHolder blocked due to NotInAllow at location MailboxDataStore exception.

FIX: You receive an exception error message when you use the BinaryFormatter object to serialize and to deserialize a generic type in an assembly in the .NET Framework 2.0 Service Pack 2 or in the .NET Framework 3.5 Service Pack 1 - Microsoft Support.

In Microsoft Exchange Server 2019 or Exchange Server 2016, when users successfully sign in to mailboxes by using Outlook on the web (previously known as OWA) or refresh the Outlook on the web webpage, the following event is logged in the Application log: LogName: Application. Source: System.Runtime.Serialization. Date: DateTime.

Windows 11 Windows 10. PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check.

Windows 11 Windows 10. If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key. Where can I find my BitLocker recovery key?

Windows 10. This article applies if you’ve recently made changes to your device hardware and are trying to upgrade to Windows 11. Hardware changes might affect your upgrade eligibility, though you’ll need to take a few steps to see your updated eligibility in Settings.

Step 1. Download the offline installer from your account portal. To download the offline installer, go to www.office.com. If you're not already signed in with the Microsoft account associated with your copy of Microsoft 365 or Microsoft 365 do that now.

Press and hold (or right-click) on the app, then select Uninstall. Uninstall in Settings. Select Start > Settings > Apps > Apps & features . Find the app you want to remove, select More > Uninstall. Note: Some apps can't be uninstalled from the Settings app right now.