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  1. Fix High CPU Usage Caused by .NET Runtime Optimization Service
    Sep 21, 2026 · original
    The .NET Runtime Optimization Service can sometimes cause high CPU usage on Windows. In most cases, this happens while .NET Framework applications are being optimized. If the CPU usage remains high for a long time, you can manually process the pending optimization tasks. In this article, you will learn how to fix high CPU usage caused by the .NET Runtime Optimization Service. Table of contents .NET Runtime Optimization Service Fix high CPU usage caused by .NET Runtime Optimization Service 1. Start Command Prompt 2. Run NGEN for 32-bit and 64-bit applications 3. Check CPU Usage Conclusion .NET Runtime Optimization Service The .NET Runtime Optimization Service is part of the .NET Framework and is responsible for optimizing .NET applications by compiling assemblies into native code. This can improve application startup and overall performance. Normally, the service runs in the background an
  2. How to Enable Cross-Tenant Message Recall in Exchange Online
    Sep 14, 2026 · original
    Have you ever sent an email to someone in another Microsoft 365 tenant and immediately wished you could take it back? Well, now you can. With cross-tenant message recall, organizations can allow trusted Microsoft 365 tenants to recall messages sent to their users. In this article, you will learn how to enable cross-tenant message recall in Exchange Online. Table of contents Connect to Exchange Online PowerShell Check cross-tenant recall configuration Enable cross-tenant message recall Add Microsoft 365 allowed sender tenant Remove Microsoft 365 allowed sender tenants Conclusion Connect to Exchange Online PowerShell First, Install the Exchange Online PowerShell module . Install-Module -Name ExchangeOnlineManagement -Force Once the module is installed, Connect to Exchange Online PowerShell . Connect-ExchangeOnline Check cross-tenant recall configuration Check the tenant’s current configura
  3. How to Remove OneDrive Photos App
    Aug 3, 2026 · original
    Microsoft is quietly rolling out the OneDrive Photos app to Windows. Many organizations aren’t waiting for it to show up unexpectedly to users, or they simply never want it to appear at all. In this article, you will learn how to remove the OneDrive Photos app. OneDrive Photos App Microsoft is rolling out a standalone OneDrive Photos app ( OneDrive.App.exe ) into Windows. For a lot of managed environments, it’s unwanted overhead. This means another background process, another sync target, another app showing up in the Start Menu that the IT support team has to explain to the users. This is what the OneDrive Photos app looks like when you start it. OneDrive Photos app location The OneDrive Photos app location can be found under different paths. Machine-wide: C:\Program Files\Microsoft OneDrive\OneDrive.App.exe Per-user: %LocalAppData%\Microsoft\OneDrive\OneDrive.App.exe Let’s see how to r
  4. How to Remove Unlock Teams Premium Button in Microsoft Teams
    Jun 10, 2026 · original
    An Unlock Teams Premium button appears in Microsoft Teams for users, and many keep asking what it is. Some even click it and start a trial. That’s something most organizations want to avoid. In this article, you will learn how to remove the Unlock Teams Premium button in Microsoft Teams. Table of contents Teams Premium Button in Microsoft Teams Disable Unlock Teams Premium button in Microsoft 365 Disable Unlock Teams Premium button with PowerShell After disabling Unlock Teams Premium button in Microsoft Teams Conclusion Teams Premium Button in Microsoft Teams Microsoft Teams shows the Unlock Teams Premium button when you click on the three dots in the menu bar. Once you click on the Unlock Teams Premium button, the user can start a trial, which is free and requires no card required. Do you want this in your organization? Clearly not. Let’s look at how to disable the Unlock Teams Premium
  5. How to Configure NTP Time Source on Domain Controller
    May 27, 2026 · original
    Proper time synchronization is a key part of a healthy Active Directory environment. The Primary Domain Controller (PDC) acts as the main time authority, so it must stay accurately synced with an external NTP server to ensure all systems in the network operate correctly. In this article, you will learn how to configure an NTP time source on a Domain Controller. Table of contents Step 1. Find PDC Emulator Step 2. Check current time source Step 3. Disable VM guest time synchronization Step 4. Configure external NTP peers Step 5. Restart Windows Time service Step 6. Force resynchronization Step 7. Verify new time source Step 8. Check offset/drift Step 9. Resync time with DCs Conclusion Step 1. Find PDC Emulator Locate the server holding the PDC (Primary Domain Controller) role. netdom query fsmo Step 2. Check current time source On the PDC, check what your current timesync source is. w32tm
  6. How to Block Access for High-Risk AI Agents
    May 19, 2026 · original
    So many AI Agents are available to use in your tenant without you even knowing. More and more agents are becoming available, and this will keep going. Unless you put a stop to it or manage it. The first thing you should do is block the high-risk ones. In this article, you will learn how to block access for high-risk AI Agents. Table of contents Block access for high-risk AI Agents Conclusion Block access for high-risk AI Agents To block access for high-risk AI agents using a Conditional Access policy, follow the steps below: Sign in to Microsoft Entra admin center . Browse to Entra ID Conditional Access Policies . Click New policy . Give your policy a name ( CA13-Block High-Risk Agent Identities ). Click under Users or agents (Preview) . Select Agents (Preview) . Select Include All agent identities (Preview) . Click under Target resources . Select Resources (formerly cloud apps) . Select
  7. Conditional Access Policy Maximum Limit Explained
    May 7, 2026 · original
    The Conditional Access policy feature in Microsoft Entra ID is one of the most essential ones to set up when it comes to securing your Microsoft tenant. While every organization is different, there are certain CA policies that every tenant must set. But what if you have many CA policies? How far can you go, and what is the actual limit? In this article, you will learn about the Conditional Access Policy maximum limit in Microsoft Entra ID. Conditional Access Policy limits in Microsoft Entra ID An organization has around 200 CA policies in its Microsoft tenant and wants to add more. While 200 CA policies are a bit too much, it’s possible. However, we must be precise to know how many CA policies can be added, so a good advice and plan can be made. This is what Microsoft tells us about the maximum Access Policy limit: Creating a policy for each app isn’t efficient and makes managing policie
  8. How to Enable Tenant Isolation in Power Platform
    Apr 21, 2026 · original
    Microsoft is strengthening security in Power Platform. Starting March 30, 2026, Microsoft enables Power Platform tenant isolation by default for new tenants. If you created your tenant before this date, you need to enable it manually. In this article, you will learn how to enable tenant isolation in Power Platform. Table of contents Enable tenant isolation in Power Platform admin center Set up exceptions in tenant isolation Conclusion Enable tenant isolation in Power Platform admin center Note: Starting March 30, 2026, only new tenants will have tenant isolation enabled by default. Existing tenants will not have their existing tenant isolation turned on. So you must enable it yourself. Important: Microsoft highly recommends enabling tenant isolation following the instructions below. To enable tenant isolation in Power Platform admin center, follow the steps below: Sign in to the Power Pl
  9. How to Block Soft and Hard Match in Microsoft Entra ID
    Apr 7, 2026 · original
    Microsoft recommends that all customers disable hard matching and soft matching in Microsoft Entra ID unless they need it to take over cloud-only accounts. By default, both settings are not blocked in the tenants, so you must set it yourself. In this article, you will learn how to block soft and hard match in Microsoft Entra ID. Table of contents Before you start Step 1. Install Microsoft Graph PowerShell Step 2. Connect to Microsoft Graph PowerShell Step 3. Check soft and hard match status Step 4. Block soft and hard match Conclusion Before you start Sometimes you want to soft or hard match users , and that’s completely fine. However, this means that you need to enable soft and hard match. In other words, revert the change from this article. After that, you can proceed and soft or hard match the users. Once it’s done, you must block both soft and hard match in the tenant. Note: Soft and
  10. How to Fix 550 5.1.10 RESOLVER.ADR.RecipientNotFound in Exchange Server
    Mar 5, 2026 · original
    An external user sends an email to multiple recipients in the organization. However, no one received the email. When looking at the logs, it shows the error: SMTP error from remote mail server after sending data block: 550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup. In this article, you will learn how to fix 550 5.1.10 RESOLVER.ADR.RecipientNotFound in Exchange Server. Table of contents 550 5.1.10 RESOLVER.ADR.RecipientNotFound error Fix 550 5.1.10 RESOLVER.ADR.RecipientNotFound error Verify your work Conclusion 550 5.1.10 RESOLVER.ADR.RecipientNotFound error The Recipient Filter agent is an anti-spam feature that blocks inbound emails addressed to recipients that don’t exist in your organization’s directory. It checks incoming SMTP connections and rejects messages destined for invalid/non-existent mailboxes. This is done before the message is even

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