[Guide] Resolve Unable to Reach Windows Activation Servers Error

Are you struggling with the frustrating "Unable to Reach Windows Activation Servers" error on your computer? If so, you're not alone. In this insightful article, we delve into the common causes behind this issue and provide you with practical troubleshooting tips to fix it.


By Zelia / Updated on December 14, 2023

Share this: instagram reddit

Common Causes of "Unable to Reach Windows Activation Servers"

When confronted with the frustrating message of being unable to reach Windows activation servers, several factors may contribute to this issue:

  • Internet Connectivity Issues: The most basic yet crucial aspect, ensuring stable internet connectivity is fundamental for successful communication with activation servers.
  • Firewall or Security Software Interference: Overzealous firewall settings or security software may block the connection to Windows activation servers.
  • Server Outage or Maintenance: Periodic server maintenance or unexpected outages can disrupt the connection to activation servers.
  • Incorrect System Date and Time Settings: Inaccurate system date and time settings can lead to failed communication with activation servers.
  • Corrupted System Files Related to Activation: Damage to system files associated with activation can hinder the connection process.


How to troubleshoot "Windows Unable to Reach Activation Servers " error

When encountering the "Windows 10 Unable to Reach Activation Servers" error, troubleshooting the issue requires a systematic approach to pinpoint the underlying cause. Here’s a step-by-step guide to resolve this activation error:

Method 1: Install the Creator’s Update

1. Open the Run Window by pressing the Windows key + R key. Enter control update and click OK to access Windows Update.

2. Click Check for updates. Allow the utility to scan your system and follow the prompts to restart your system.

Method 2: Use a Generic Product Key for Your Windows Version

1. Open the Run Window by pressing the Windows + R keys. Enter "slui" and click OK to open the Windows Activation Client.

2. Choose Change product key, then input the appropriate generic key corresponding to your Windows edition.


Windows 10 Home Edition: YTMG3 – N6DKC – DKB77 – 7M9GH – 8HVX7
Windows 10 Home Edition Single Language: BT79Q – G7N6G – PGBYW – 4YWX6 – 6F4BT
Windows 10 Pro Edition: VK7JG – NPHTM – C97JM – 9MPGT – 3V66T
Windows 10 Home N Edition: 4CPRK – NM3K3 – X6XXQ – RXX86 – WXCHW
Windows 10 Pro N Edition: 2B87N – 8KFHP – DKV6R – Y2C8J – PKCKT

3. Click Next and allow the activation process to complete, then proceed to restart your computer.

Method 3: Activate Windows via Chat Support

1. Open the Run Window by pressing the Windows key + R key. Enter "slui 4" and click OK to access the Installation ID screen.

2. Then, select your country or region and click Next.

3. Minimize the Installation ID window when prompted to call the number. Search for get help in the Search box and launch the Get Help application.

4. Type test and then choose No at each prompt until you reach the option – talk to a person.

5. Navigate to Services & Apps > Windows > Setting up and choose Chat online with a Microsoft Answer Tech.

6. Maximize the Installation ID window and copy the ID into the Contact Support window. The Microsoft Answer Tech will provide you with the Confirmation ID. Then you should return to the Installation ID window, click Enter confirmation ID.


7. Choose Activate Windows and await the reactivation of the license.

Seek professional help to protect your Windows Server system

In the ever-evolving landscape of Windows Server systems, the need for robust security measures has never been more critical. When faced with challenges like the ominous "Unable to Reach Windows Activation Servers Enterprise" error, seeking professional assistance becomes paramount to safeguarding your system's integrity. This article explores the significance of professional help in protecting your Windows Server and introduces AOMEI Cyber Backup as the ultimate solution to fortify your data and ensure the seamless operation of your Windows Server environment.

Efficient Data Protection: It ensures the efficient and secure backup of critical data on your Windows Server, shielding it from potential threats.
Quick Recovery Options: In the face of data loss or system issues, it provides swift and reliable recovery options, minimizing disruptions and ensuring business continuity.
User-Friendly Interface: Despite its advanced capabilities, it boasts a user-friendly interface, making it accessible to users with varying levels of technical expertise.

You can click the button below to harness the power of AOMEI Cyber Backup to protect your Windows Server.

Download FreewareWindows Server & PC
Secure Download

* Both free and paid version of AOMEI Cyber Backup support Windows Server 2016/2019/2022/11,10,8,7.

Steps to Secure Your Windows Server with AOMEI Cyber Backup

1. Installation and Configuration: Sign in AOMEI Cyber Backup, then access to Source Device >> Agents >> + Add Agent. If you do not install AOMEI Cyber Backup Agent to your computer or the version of agent is not compatible, please Download Agent or Update Agent at first.


2. Source Device Setup: Add your Windows device in the AOMEI Cyber Backup web console under the Source Device section.


3. Backup Task Creation: Navigate to the Backup Task area, create a new task, and choose your preferred Backup Type – System Backup (VMware ESXi Backup/Hyper-V Backup/Microsoft SQL Backup/Disk Backup/Partition Backup).


4. Customization: Configure the Task Name, Device, Target, and Schedule according to your preferences.


5. Start Backup: Click Start Backup and select Add the schedule and start backup now, or Add the schedule only.


6. Efficient Recovery: In the event of data loss, initiate the recovery process by clicking on Backup Task, locating the task to restore, and selecting the appropriate restore option.



In the dynamic landscape of Windows Server systems, encountering activation issues is not uncommon. The "Unable to Reach Windows Activation Servers" error, while frustrating, can be resolved through systematic troubleshooting. By addressing common causes and following the outlined steps, users can often restore the connection to activation servers.

For enhanced protection and peace of mind, considering a robust solution like AOMEI Cyber Backup is advisable. With its efficient data protection and quick recovery options, AOMEI Cyber Backup stands as a valuable ally in safeguarding your Windows Server system against potential threats and ensuring the continuity of your operations. In the face of activation challenges, proactive troubleshooting combined with a reliable backup solution ensures a resilient and secure Windows Server environment.

Zelia · Editor
Zelia is an editor from AOMEI Technology.She mainly writes articles about virtual machine. Writing is one of her hobbies and she wants her articles to be seen by more people. In her spare time, she likes to draw and listen to music, and it is a pleasure for her to focus on her own world.