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.

Symptoms. After the January 2023 or the February 2023 Security Update for Microsoft Exchange Server 2019, 2016, or 2013 is installed, and the Certificate Signing of PowerShell Serialization Payload is enabled, the Exchange Toolbox and Queue Viewer doesn't start.

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 feature ...

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.

Event ID 65535 System.Runtime.Serialization errors in Application log in Exchange Server 2019 or 2016 - Microsoft Support.

Serialization fails when accessing mailbox searches in ECP - Microsoft Support. Exchange Server 2019 Exchange Server 2016 Exchange Server 2013. 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:

Swipe in from the right edge of the screen, and then tap Search.Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.Type Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator.If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

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.

From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options. Choose the language and bit version you want, and then select Install.

If you delete files or folders that you're syncing, you can restore them from the Windows recycle bin on your PC. To put your Windows recycle bin on your desktop, see Show or hide the Recycle Bin. The information in this article also applies to OneDrive (for work or school) files.