---
title: Out Of Memory issue related to Delivery optimization
description: Fix Windows memory leak caused by KB5072033 update. Step-by-step guide to disable Delivery Optimization using Group Policy, Registry, Services, or Settings.
---

[Skip to content](https://support.bmileisure.com/support-center/out-of-memory-issue-related-to-delivery-optimization#main-content)

English

Show submenu for translations

[Customer portal](https://support.bmileisure.com/tickets-view?hsLang=en)

![logo\_big\_darkBG@2x.png\]](https://support.bmileisure.com/hs-fs/hubfs/logo_big_darkBG@2x.png?height=50&name=logo_big_darkBG@2x.png)

Open main navigation

Close main navigation

- English
  
  Show submenu for translations
- [Customer portal](https://support.bmileisure.com/tickets-view)
- [Main website](https://www.bmileisure.com/en/)

[Main website](https://www.bmileisure.com/en/)

 Welcome to the BMI Support Portal. How can we help you?

- There are no suggestions because the search field is empty.

1. [Support Center](https://support.bmileisure.com/support-center?hsLang=en)
2. [Troubleshooting](https://support.bmileisure.com/support-center/troubleshooting?hsLang=en)
3. [Windows OS](https://support.bmileisure.com/support-center/troubleshooting?hsLang=en#windows-os)

# Out Of Memory issue related to Delivery optimization

## Problem: Windows Delivery Optimization service causing memory leak issues Affected Update: Windows KB5072033 and related updates Impact: System slowdowns, high memory usage, potential system instability Solution: Disable Delivery Optimization feature

### Knowledge Base Article: Disabling Delivery Optimization to Resolve Memory Leak (KB5072033)

#### Issue Overview

**Problem:** Windows Delivery Optimization service causing memory leak issues **Affected Update:** Windows KB5072033 and related updates **Impact:** System slowdowns, high memory usage, potential system instability **Solution:** Disable Delivery Optimization feature

---

#### What is Delivery Optimization?

Delivery Optimization is a Windows peer-to-peer distribution method that downloads Windows updates and apps from multiple sources (both Microsoft servers and other PCs on your local network or internet) to speed up downloads and reduce bandwidth usage.

---

#### Resolution Steps

### Method 1: Group Policy Editor (Windows Pro/Enterprise)

1. **Open Group Policy Editor** 
     - Press `Windows + R`
     - Type `gpedit.msc`
     - Click OK
2. **Navigate to Delivery Optimization Policy** 
     - Go to: `Computer Configuration → Administrative Templates → Windows Components → Delivery Optimization`
3. **Disable the Service** 
     - Double-click on "Download Mode"
     - Select "Enabled"
     - In the dropdown menu, select "Bypass (100)"
     - Click Apply, then OK
4. **Restart the Computer** 
     - Required for changes to take effect

---

### Method 2: Registry Edit (All Windows Versions)

**⚠️ Warning:** Editing the registry can cause system issues if done incorrectly. Create a backup first.

1. **Open Registry Editor** 
     - Press `Windows + R`
     - Type `regedit`
     - Click OK (accept UAC prompt)
2. **Navigate to Registry Key** 
     - Go to: `HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization`
     - If the key doesn't exist, create it: 
           - Right-click on `Windows` → New → Key
           - Name it `DeliveryOptimization`
3. **Create/Modify DWORD Value** 
     - Right-click in the right pane → New → DWORD (32-bit) Value
     - Name it `DODownloadMode`
     - Double-click it and set Value data to `100`
     - Click OK
4. **Restart the Computer**

---

### Method 3: Windows Settings (Limited Disable)

This method limits but doesn't fully disable Delivery Optimization:

1. **Open Windows Settings** 
     - Press `Windows + I`
     - Go to "Update & Security"
2. **Access Delivery Optimization** 
     - Click "Delivery Optimization"
     - Click "Advanced options"
3. **Limit Bandwidth** 
     - Toggle off "Allow downloads from other PCs"
     - Or set bandwidth limits to minimum values

---

### Method 4: Service Disable (Advanced)

1. **Open Services** 
     - Press `Windows + R`
     - Type `services.msc`
     - Click OK
2. **Locate Delivery Optimization Service** 
     - Find "Delivery Optimization" in the list
     - Right-click → Properties
3. **Disable the Service** 
     - Set Startup type to "Disabled"
     - Click Stop (if service is running)
     - Click Apply, then OK
4. **Restart the Computer**

---

#### Verification Steps

After applying the fix:

1. **Check Memory Usage** 
     - Open Task Manager (`Ctrl + Shift + Esc`)
     - Monitor memory usage over 24-48 hours
     - Look for improvement in baseline memory consumption
2. **Verify Service Status** 
     - Open Services (`services.msc`)
     - Confirm "Delivery Optimization" shows as "Disabled" or "Stopped"
3. **Check Windows Update Functionality** 
     - Go to Settings → Update & Security → Windows Update
     - Click "Check for updates"
     - Verify updates still download (just slower, from Microsoft servers only)

---

#### Important Notes

**Trade-offs:**

- Updates will download only from Microsoft servers
- Update downloads may be slower
- Uses more internet bandwidth (no peer sharing)

**Best for:**

- Systems experiencing memory leaks
- Environments where bandwidth isn't a concern
- Controlled IT environments with specific update management

**Alternative Consideration:**

- If managing multiple PCs, consider using WSUS (Windows Server Update Services) instead for centralized update management

---

#### Additional Troubleshooting

If memory leak persists after disabling Delivery Optimization:

1. **Check for pending Windows Updates** 
     - Install all available updates
     - Restart system
2. **Run Windows Memory Diagnostic** 
     - Press `Windows + R`
     - Type `mdsched.exe`
     - Choose restart option
3. **Check for other KB-related issues** 
     - Research specific KB5072033 issues
     - Consider uninstalling/reinstalling the update if necessary

---

#### Related Information

**KB Reference:** KB5072033 **Services Affected:** Delivery Optimization (DoSvc) **Registry Location:** `HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization` **Related Settings:** Windows Update, Network Bandwidth Management

- [Guest Activation](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#main-content)

    - [Online Booking](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#online-booking)
    - [Registration kiosk](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#registration-kiosk)
    - [Group booking](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#group-booking)
    - [Event booking (B2B)](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#event-booking-b2b)
    - [Offers and reservations](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#offers-and-reservations)
    - [Combo deals](https://support.bmileisure.com/support-center/guest-activation?hsLang=en#combo-deals)
- [Guest Engagement & Retention](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#main-content)

    - [CRM](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#crm)
    - [Email marketing](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#email-marketing)
    - [Mobile app](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#mobile-app)
    - [Mobile push notification](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#mobile-push-notification)
    - [Memberships & subscriptions](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#memberships-subscriptions)
    - [Loyalty system](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#loyalty-system)
    - [Promotions & discounts](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#promotions-discounts)
    - [Cross and upsell](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#cross-and-upsell)
    - [Video marketing (TV) & digital signage](https://support.bmileisure.com/support-center/guest-engagement-retention?hsLang=en#video-marketing-tv-digital-signage)
- [Streamlined Operations](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#main-content)

    - [Point of Sales](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#point-of-sales)
    - [Ticketing](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#ticketing)
    - [Offers & invoices](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#offers-invoices)
    - [Smart scheduling](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#smart-scheduling)
    - [Staff management](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#staff-management)
    - [Food & beverage management](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#food-beverage-management)
    - [Maintenance & spare parts](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#maintenance-spare-parts)
    - [Timing](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#timing)
    - [TV Video marketing & digital signage](https://support.bmileisure.com/support-center/streamlined-operations?hsLang=en#tv-video-marketing-digital-signage)
- [Integrations](https://support.bmileisure.com/support-center/integrations?hsLang=en#main-content)

    - [Payment processors](https://support.bmileisure.com/support-center/integrations?hsLang=en#payment-processors)
    - [Integrated hardware](https://support.bmileisure.com/support-center/integrations?hsLang=en#integrated-hardware)
    - [Fiscal integrations](https://support.bmileisure.com/support-center/integrations?hsLang=en#fiscal-integrations)
    - [Kitchen Display Systems](https://support.bmileisure.com/support-center/integrations?hsLang=en#kitchen-display-systems)
- [Insights & Reporting](https://support.bmileisure.com/support-center/insights-reporting?hsLang=en#main-content)

    - [Easy data access and analysis](https://support.bmileisure.com/support-center/insights-reporting?hsLang=en#easy-data-access-and-analysis)
    - [Quick data export](https://support.bmileisure.com/support-center/insights-reporting?hsLang=en#quick-data-export)
    - [Microsoft Power Bi](https://support.bmileisure.com/support-center/insights-reporting?hsLang=en#microsoft-power-bi)
- [Troubleshooting](https://support.bmileisure.com/support-center/troubleshooting?hsLang=en#main-content)

    - [Hardware](https://support.bmileisure.com/support-center/troubleshooting?hsLang=en#hardware)
    - [Timing](https://support.bmileisure.com/support-center/troubleshooting?hsLang=en#timing)
    - [Windows OS](https://support.bmileisure.com/support-center/troubleshooting?hsLang=en#windows-os)
- [Manuals](https://support.bmileisure.com/support-center/manuals?hsLang=en)
- [Can’t find the answer to your question?](https://support.bmileisure.com/support-center/cant-find-the-answer-to-your-question?hsLang=en)
- [Product Updates](https://support.bmileisure.com/support-center/product-updates?hsLang=en#main-content)

    - [October 2023](https://support.bmileisure.com/support-center/product-updates?hsLang=en#october-2023)

[![Chill listening crop-3](https://support.bmileisure.com/hs-fs/hubfs/2-%20Alternative%20logo%20(Black)-1.png?width=37&height=37&name=2-%20Alternative%20logo%20(Black)-1.png "Chill listening crop-3")](https://www.bmileisure.com/en/)

<https://www.facebook.com/bmileisuresoftware> <https://www.linkedin.com/company/bmileisure>

Copyright © 2026, BMI Leisure