---
title: How to Upgrade MDaemon Email Server (Step-by-Step Guide)
description: How to upgrade MDaemon Email Server from older, unsupported versions. MDaemon is a trusted alternative to Microsoft Exchange and Microsoft 365.
image: https://blog.mdaemon.com/hubfs/Updating-MDaemon_TN.jpg
---

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# MDaemon Technologies Blog

## [How to Upgrade MDaemon Email Server (Step-by-Step Guide)](https://blog.mdaemon.com/how-to-upgrade-mdaemon-email-server-step-by-step-guide)

 By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro)

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Running an outdated version of MDaemon Email Server can expose your organization to security risks, compatibility issues, and missed productivity features. If your MDaemon installation predates version 21, or if you’re still using a 32-bit build, now is the time to plan an upgrade.

This guide walks you through what’s changed since MDaemon 21, important upgrade requirements, and the recommended upgrade path to get you safely to the latest version.

## **What’s New Since MDaemon 21**

Recent versions of MDaemon include several major enhancements designed to improve security, collaboration, and usability:

- Google Drive integration for MDaemon Webmail
- Microsoft OneDrive integration for MDaemon Webmail
- Appointment scheduling ([Video tutorial](https://youtu.be/XseUonjN_nk?si=ORl-y_F9HoESdNXL))
- Send-As permissions ([Video tutorial](https://youtu.be/96n6YX0sPl4?si=Nqg_Nco8PMX681_F))
- Passwordless authentication
- … and much more

These features are available only in newer MDaemon releases and are a strong reason to upgrade if you’re running an older version.

 

**Important Upgrade Requirements to Know First**

Before upgrading MDaemon, review these key system and compatibility considerations:

- **MDaemon 25.5 requires Windows 10 or Windows Server 2012 or newer**
- **32-bit versions of MDaemon are no longer supported**  
  (MDaemon 22.0 and later are available only in 64-bit)
- **Cyren AntiVirus has been replaced with Ikarus AntiVirus** (Note: MDaemon AntiVirus is a [licensed feature available via additional purchase](https://mdaemon.com/pages/mdaemon-email-antivirus-antispam)).

### **How to Upgrade MDaemon in Increments (Best Practice)**

For maximum stability, especially on older servers, we recommend upgrading MDaemon in stages:

1. **Upgrade to MDaemon 21.5.6 (32-bit)**  
   This is the final supported 32-bit release.
2. **Install MDaemon 21.5.6 (64-bit)**  
   This transitions your system to the required architecture.
3. **Upgrade to the latest MDaemon version** (25.5.2 currently)

You can download the latest version here: [https://mdaemon.com/pages/downloads-mdaemon-mail-server-free-trial](https://mdaemon.com/pages/downloads-mdaemon-mail-server-free-trial)

Simply run each installer and follow the prompts on your screen.

Watch our video to see the process in more detail:

<iframe width="560" height="315" src="https://www.youtube.com/embed/rqvxOYl2McM?si=OuCOn95QCWP7LA9w" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; border: medium;"></iframe>

 

Optionally, you can install versions 22, 23, 24, and 25 one at a time to confirm that each version starts and functions correctly before proceeding.

All supported installers are available here:  
👉 [https://files.mdaemon.com/mdaemon/release](https://files.mdaemon.com/mdaemon/release)

#### **Need Help Upgrading MDaemon?**

Upgrading MDaemon shouldn’t feel daunting, however if you need assistance, visit **[www.mdaemon.com](http://www.mdaemon.com)** and click the **Support** tab for documentation, tools, and expert guidance.

 Tags: [Email How To](https://blog.mdaemon.com/topic/email-how-to), [Email Best Practices](https://blog.mdaemon.com/topic/email-best-practices), [Software update](https://blog.mdaemon.com/topic/software-update), [Upgrade](https://blog.mdaemon.com/topic/upgrade)

![Brad Wyro](https://blog.mdaemon.com/hs-fs/hubfs/Brad-2023v2.jpg?width=100&height=100&name=Brad-2023v2.jpg)

#### Written by [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro)

Brad has worked in technical and marketing roles at MDaemon Technologies, where he contributes as Content Marketing Manager. Brad balances technical and creative information to develop easy to understand videos and content to educate prospects and customers.

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### Lists by Topic

- [Email Security (73)](https://blog.mdaemon.com/tag/email-security)
- [MDaemon Email Server (45)](https://blog.mdaemon.com/tag/mdaemon-email-server)
- [Email How To (38)](https://blog.mdaemon.com/tag/email-how-to)
- [Email Best Practices (29)](https://blog.mdaemon.com/tag/email-best-practices)
- [Phishing (28)](https://blog.mdaemon.com/tag/phishing)
- [Product Updates (28)](https://blog.mdaemon.com/tag/product-updates)
- [Security Gateway for Email (27)](https://blog.mdaemon.com/tag/security-gateway-for-email)
- [Stop Spam Email (25)](https://blog.mdaemon.com/tag/stop-spam-email)
- [Cybersecurity (24)](https://blog.mdaemon.com/tag/cybersecurity)
- [Email Security Best Practices (23)](https://blog.mdaemon.com/tag/email-security-best-practices)
- [Email Server (22)](https://blog.mdaemon.com/tag/email-server)
- [Two-Factor Authentication (18)](https://blog.mdaemon.com/tag/two-factor-authentication)
- [Email Gateway How-To (17)](https://blog.mdaemon.com/tag/email-gateway-how-to)
- [Email Security Trends (15)](https://blog.mdaemon.com/tag/email-security-trends)
- [SecurityGateway (13)](https://blog.mdaemon.com/tag/securitygateway)
- [Health Care Security (12)](https://blog.mdaemon.com/tag/health-care-security)
- [Spear Phishing (12)](https://blog.mdaemon.com/tag/spear-phishing)
- [Data Leak Prevention (11)](https://blog.mdaemon.com/tag/data-leak-prevention)
- [Email Encryption (11)](https://blog.mdaemon.com/tag/email-encryption)
- [Anti-Spoofing (10)](https://blog.mdaemon.com/tag/anti-spoofing)
- [MDaemon Webmail (10)](https://blog.mdaemon.com/tag/mdaemon-webmail)
- [Email Archiving (8)](https://blog.mdaemon.com/tag/email-archiving)
- [Email Management (8)](https://blog.mdaemon.com/tag/email-management)
- [Email Privacy (8)](https://blog.mdaemon.com/tag/email-privacy)
- [Email Spoofing (8)](https://blog.mdaemon.com/tag/email-spoofing)
- [Business Email Compromise (7)](https://blog.mdaemon.com/tag/business-email-compromise)
- [Tutorial (7)](https://blog.mdaemon.com/tag/tutorial)
- [Anti-Virus (6)](https://blog.mdaemon.com/tag/anti-virus)
- [Collaboration (6)](https://blog.mdaemon.com/tag/collaboration)
- [Email Software (6)](https://blog.mdaemon.com/tag/email-software)
- [Update (6)](https://blog.mdaemon.com/tag/update)
- [Email Authentication (5)](https://blog.mdaemon.com/tag/email-authentication)
- [Compliance (4)](https://blog.mdaemon.com/tag/compliance)
- [Email Remote Administration (4)](https://blog.mdaemon.com/tag/email-remote-administration)
- [MailStore Archive Server (4)](https://blog.mdaemon.com/tag/mailstore-archive-server)
- [Microsoft 365 Exchange Alternative (4)](https://blog.mdaemon.com/tag/microsoft-365-exchange-alternative)
- [Passwords (4)](https://blog.mdaemon.com/tag/passwords)
- [Software update (4)](https://blog.mdaemon.com/tag/software-update)
- [Archive (3)](https://blog.mdaemon.com/tag/archive)
- [MDaemon (3)](https://blog.mdaemon.com/tag/mdaemon)
- [Attachments (2)](https://blog.mdaemon.com/tag/attachments)
- [Business Email (2)](https://blog.mdaemon.com/tag/business-email)
- [Cloud (2)](https://blog.mdaemon.com/tag/cloud)
- [DMARC (2)](https://blog.mdaemon.com/tag/dmarc)
- [Email Collaboration (2)](https://blog.mdaemon.com/tag/email-collaboration)
- [Industry Insight (2)](https://blog.mdaemon.com/tag/industry-insight)
- [insider threats (2)](https://blog.mdaemon.com/tag/insider-threats)
- [msp (2)](https://blog.mdaemon.com/tag/msp)
- [Anti-Relay (1)](https://blog.mdaemon.com/tag/anti-relay)
- [BEC (1)](https://blog.mdaemon.com/tag/bec)
- [Backscatter (1)](https://blog.mdaemon.com/tag/backscatter)
- [Bayesian Learning (1)](https://blog.mdaemon.com/tag/bayesian-learning)
- [Content Filter (1)](https://blog.mdaemon.com/tag/content-filter)
- [DNS-BL (1)](https://blog.mdaemon.com/tag/dns-bl)
- [Disaster Recovery (1)](https://blog.mdaemon.com/tag/disaster-recovery)
- [Email Software Reviews (1)](https://blog.mdaemon.com/tag/email-software-reviews)
- [Encrypt (1)](https://blog.mdaemon.com/tag/encrypt)
- [External Email Threats (1)](https://blog.mdaemon.com/tag/external-email-threats)
- [Gateway (1)](https://blog.mdaemon.com/tag/gateway)
- [Inbox (1)](https://blog.mdaemon.com/tag/inbox)
- [Inbox Zero (1)](https://blog.mdaemon.com/tag/inbox-zero)
- [Macros (1)](https://blog.mdaemon.com/tag/macros)
- [Monitoring (1)](https://blog.mdaemon.com/tag/monitoring)
- [Quarantine (1)](https://blog.mdaemon.com/tag/quarantine)
- [RelayFax (1)](https://blog.mdaemon.com/tag/relayfax)
- [Software (1)](https://blog.mdaemon.com/tag/software)
- [Training (1)](https://blog.mdaemon.com/tag/training)
- [Troubleshooting (1)](https://blog.mdaemon.com/tag/troubleshooting)
- [Upgrade (1)](https://blog.mdaemon.com/tag/upgrade)
- [Web Conferencing (1)](https://blog.mdaemon.com/tag/web-conferencing)
- [Windows Server (1)](https://blog.mdaemon.com/tag/windows-server)
- [internal email threat (1)](https://blog.mdaemon.com/tag/internal-email-threat)
- [ssl (1)](https://blog.mdaemon.com/tag/ssl)
- [tax scams (1)](https://blog.mdaemon.com/tag/tax-scams)

see all

### Posts by Topic

- [Email Security (73)](https://blog.mdaemon.com/tag/email-security)
- [MDaemon Email Server (45)](https://blog.mdaemon.com/tag/mdaemon-email-server)
- [Email How To (38)](https://blog.mdaemon.com/tag/email-how-to)
- [Email Best Practices (29)](https://blog.mdaemon.com/tag/email-best-practices)
- [Phishing (28)](https://blog.mdaemon.com/tag/phishing)
- [Product Updates (28)](https://blog.mdaemon.com/tag/product-updates)
- [Security Gateway for Email (27)](https://blog.mdaemon.com/tag/security-gateway-for-email)
- [Stop Spam Email (25)](https://blog.mdaemon.com/tag/stop-spam-email)
- [Cybersecurity (24)](https://blog.mdaemon.com/tag/cybersecurity)
- [Email Security Best Practices (23)](https://blog.mdaemon.com/tag/email-security-best-practices)
- [Email Server (22)](https://blog.mdaemon.com/tag/email-server)
- [Two-Factor Authentication (18)](https://blog.mdaemon.com/tag/two-factor-authentication)
- [Email Gateway How-To (17)](https://blog.mdaemon.com/tag/email-gateway-how-to)
- [Email Security Trends (15)](https://blog.mdaemon.com/tag/email-security-trends)
- [SecurityGateway (13)](https://blog.mdaemon.com/tag/securitygateway)
- [Health Care Security (12)](https://blog.mdaemon.com/tag/health-care-security)
- [Spear Phishing (12)](https://blog.mdaemon.com/tag/spear-phishing)
- [Data Leak Prevention (11)](https://blog.mdaemon.com/tag/data-leak-prevention)
- [Email Encryption (11)](https://blog.mdaemon.com/tag/email-encryption)
- [Anti-Spoofing (10)](https://blog.mdaemon.com/tag/anti-spoofing)
- [MDaemon Webmail (10)](https://blog.mdaemon.com/tag/mdaemon-webmail)
- [Email Archiving (8)](https://blog.mdaemon.com/tag/email-archiving)
- [Email Management (8)](https://blog.mdaemon.com/tag/email-management)
- [Email Privacy (8)](https://blog.mdaemon.com/tag/email-privacy)
- [Email Spoofing (8)](https://blog.mdaemon.com/tag/email-spoofing)
- [Business Email Compromise (7)](https://blog.mdaemon.com/tag/business-email-compromise)
- [Tutorial (7)](https://blog.mdaemon.com/tag/tutorial)
- [Anti-Virus (6)](https://blog.mdaemon.com/tag/anti-virus)
- [Collaboration (6)](https://blog.mdaemon.com/tag/collaboration)
- [Email Software (6)](https://blog.mdaemon.com/tag/email-software)
- [Update (6)](https://blog.mdaemon.com/tag/update)
- [Email Authentication (5)](https://blog.mdaemon.com/tag/email-authentication)
- [Compliance (4)](https://blog.mdaemon.com/tag/compliance)
- [Email Remote Administration (4)](https://blog.mdaemon.com/tag/email-remote-administration)
- [MailStore Archive Server (4)](https://blog.mdaemon.com/tag/mailstore-archive-server)
- [Microsoft 365 Exchange Alternative (4)](https://blog.mdaemon.com/tag/microsoft-365-exchange-alternative)
- [Passwords (4)](https://blog.mdaemon.com/tag/passwords)
- [Software update (4)](https://blog.mdaemon.com/tag/software-update)
- [Archive (3)](https://blog.mdaemon.com/tag/archive)
- [MDaemon (3)](https://blog.mdaemon.com/tag/mdaemon)
- [Attachments (2)](https://blog.mdaemon.com/tag/attachments)
- [Business Email (2)](https://blog.mdaemon.com/tag/business-email)
- [Cloud (2)](https://blog.mdaemon.com/tag/cloud)
- [DMARC (2)](https://blog.mdaemon.com/tag/dmarc)
- [Email Collaboration (2)](https://blog.mdaemon.com/tag/email-collaboration)
- [Industry Insight (2)](https://blog.mdaemon.com/tag/industry-insight)
- [insider threats (2)](https://blog.mdaemon.com/tag/insider-threats)
- [msp (2)](https://blog.mdaemon.com/tag/msp)
- [Anti-Relay (1)](https://blog.mdaemon.com/tag/anti-relay)
- [BEC (1)](https://blog.mdaemon.com/tag/bec)
- [Backscatter (1)](https://blog.mdaemon.com/tag/backscatter)
- [Bayesian Learning (1)](https://blog.mdaemon.com/tag/bayesian-learning)
- [Content Filter (1)](https://blog.mdaemon.com/tag/content-filter)
- [DNS-BL (1)](https://blog.mdaemon.com/tag/dns-bl)
- [Disaster Recovery (1)](https://blog.mdaemon.com/tag/disaster-recovery)
- [Email Software Reviews (1)](https://blog.mdaemon.com/tag/email-software-reviews)
- [Encrypt (1)](https://blog.mdaemon.com/tag/encrypt)
- [External Email Threats (1)](https://blog.mdaemon.com/tag/external-email-threats)
- [Gateway (1)](https://blog.mdaemon.com/tag/gateway)
- [Inbox (1)](https://blog.mdaemon.com/tag/inbox)
- [Inbox Zero (1)](https://blog.mdaemon.com/tag/inbox-zero)
- [Macros (1)](https://blog.mdaemon.com/tag/macros)
- [Monitoring (1)](https://blog.mdaemon.com/tag/monitoring)
- [Quarantine (1)](https://blog.mdaemon.com/tag/quarantine)
- [RelayFax (1)](https://blog.mdaemon.com/tag/relayfax)
- [Software (1)](https://blog.mdaemon.com/tag/software)
- [Training (1)](https://blog.mdaemon.com/tag/training)
- [Troubleshooting (1)](https://blog.mdaemon.com/tag/troubleshooting)
- [Upgrade (1)](https://blog.mdaemon.com/tag/upgrade)
- [Web Conferencing (1)](https://blog.mdaemon.com/tag/web-conferencing)
- [Windows Server (1)](https://blog.mdaemon.com/tag/windows-server)
- [internal email threat (1)](https://blog.mdaemon.com/tag/internal-email-threat)
- [ssl (1)](https://blog.mdaemon.com/tag/ssl)
- [tax scams (1)](https://blog.mdaemon.com/tag/tax-scams)

See all

#### About MDaemon Technologies

MDaemon Technologies is a pioneer in developing email and email security software helping to protect customers from evolving cyber-security threats. Its products and services are trusted by thousands of organizations in over 140 countries. For more than two decades, the company’s products have been developed with the ongoing input of IT professionals who demand reliable, affordable software that requires minimal effort to manage.

The software can be deployed in virtual, hosted cloud, on-premises, or hybrid network environments. The company sells its software and services directly and through a network of global channel partners.

For more information, visit [www.mdaemon.com](https://www.altn.com/).

Copyright © 1996-2026 MDaemon Technologies.  View [privacy policy](https://mdaemon.com/policies/privacy-policy).

 

###### Contact Us

 +1.817-601-3222

[sales@help.mdaemon.com](mailto:sales@help.mdaemon.com)

 6340 Lake Worth Blvd.  
 Fort Worth, TX 76135

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