ByWhat is the Windows 11 Installation Failed problem?
The “Installation Has Failed” error during Windows 11 installation has become a very common but serious problem today. This problem arises when the system fails to meet the Windows 11 requirements at the hardware, software, or configuration level. In this guide, we present in detail every possible cause of Windows 11 installation failure and its precise solution.
Main reasons for Windows 11 installation failure
There can be several technical reasons behind the Windows 11 Installation Failed error, such as:
TPM 2.0 is not enabled
Secure Boot disabled
Unsupported Processor
Problem with Disk Partition Style (MBR/GPT)
Outdated or corrupt drivers
Windows Update Cache issues
Antivirus or Third-Party Software Conflict
Low Storage Space
Corrupt Installation Files
Verify Windows 11 System Requirements
Before installing Windows 11, it is essential to ensure that the system meets the minimum requirements:
64-bit Processor
At least 4GB RAM
64GB Storage
TPM 2.0 Enabled
UEFI Firmware + Secure Boot
DirectX 12 Compatible Graphics
If any of these conditions are not met, the Windows 11 Installation Failed error is inevitable.
How to Enable TPM 2.0 and Secure Boot
Enable TPM 2.0 from BIOS
1. Restart the system
2. Enter BIOS/UEFI (F2, DEL or F10)
3. Go to Advanced / Security Settings
4. Enable TPM, PTT, or fTPM
5. Save and Exit
Enable Secure Boot
Go to BIOS and set the Boot Mode to UEFI
Enable Secure Boot
Convert MBR to GPT Disk
Windows 11 only supports the GPT Partition Style. If your disk is in MBR, the installation will fail.
Run this command in CMD (Admin):
“`
mbr2gpt /convert /allowFullOS
“`
Then restart the system. Clear the Windows Update Cache
Sometimes, installation fails due to a corrupted Windows Update cache.
1. Open Services.msc
2. Stop the Windows Update Service
3. Go to this location:
`C:\Windows\SoftwareDistribution`
4. Delete all files
5. Restart the service
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Disable Antivirus and Third-Party Software
Third-party antivirus, VPNs, or system tuning tools can interfere with Windows 11 installation.
Temporarily disable or uninstall your antivirus
Close VPN and background tools
Disk Space and System Cleanup
Sufficient free space is necessary for Windows 11 installation.
Run the Disk Cleanup Tool
Remove Temp Files, Windows.old, and cache files
Ensure at least 30–40GB of free space
Driver Compatibility and Updates
Outdated drivers are not compatible with Windows 11.
Open Device Manager
Update all critical drivers
Especially Graphics, Network, and Storage drivers
Proper Use of the Windows 11 Installation Assistant
Microsoft’s official Windows 11 Installation Assistant is the safest method.
Avoid ISOs or third-party tools
Maintain a stable internet connection
Do not shut down the system during installation
Install with a Clean Boot
A clean boot starts the system with minimal services.
1. Open MSConfig
2. Select Selective Startup
3. Disable Non-Microsoft Services
4. Restart and begin the installation
Repair Corrupt System Files
If system files are corrupted, this error is likely to occur.
Run in CMD (Admin):
“`
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
“`
Pro Tips to Avoid Windows 11 Installation Failure
Always use official Microsoft tools
Keep BIOS and firmware updated
Ensure a power backup
Back up your data beforehand
Conclusion
The Windows 11 Installation Has Failed error may seem like a complex problem, but with the right information and step-by-step solutions, it can be completely resolved. In this guide, we have covered every technical aspect in detail to ensure a successful Windows 11 installation. By using the correct settings, the right tools, and following the proper procedure, this problem can be resolved permanently.
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Frequently Asked Questions (FAQ) – Windows 11 Installation Has Failed
Question 1: What are the most common reasons for “Windows 11 Installation Has Failed”?
Answer: The most common reasons are TPM 2.0 being disabled, Secure Boot being turned off, or an unsupported processor. MBR disks, insufficient storage, and outdated drivers can also be responsible.
Question 2: Can Windows 11 be installed without TPM 2.0?
Answer: Officially, no. TPM 2.0 is mandatory for Windows 11. Some unofficial methods allow installation, but they are not considered safe or stable.
Question 3: What is Secure Boot and why is it necessary?
Answer: Secure Boot is a security feature that prevents unauthorized software from starting with the system. Secure Boot must be enabled for Windows 11 installation.
Question 4: Why do I get the 0xC1900101 error when installing Windows 11?
Answer: This error usually occurs due to driver conflicts, hardware incompatibility, or an outdated BIOS.
Question 5: Will Windows 11 install without converting from MBR to GPT?
Answer: No. Windows 11 only supports the GPT partition style. Installation fails on MBR disks.
Question 6: Is it safe to install using the Windows 11 Installation Assistant?
Answer: Yes, the Windows 11 Installation Assistant is Microsoft’s official tool and is considered the safest and most reliable method.
Question 7: Can antivirus software cause Windows 11 installation to fail?
Answer: Yes. Sometimes, third-party antivirus or firewall software can block the installation process, leading to errors.
Question 8: What are the benefits of clearing the Windows Update Cache?
Answer: A corrupted update cache can prevent Windows 11 installation. Clearing the cache can resolve installation errors.
Question 9: How much free storage space is required?
Answer: At least 64GB of storage is required, but it’s better to have 30–40GB of additional free space for a smooth installation.
Question 10: Can Windows 11 be installed on older laptops?
Answer: Yes, if the laptop meets the hardware requirements. It’s not possible on very old systems.
Question 11: Why is a clean boot helpful for a successful Windows 11 installation?
Answer: A clean boot starts the system with only essential services, eliminating conflicts with third-party software.
Question 12: Is a backup necessary before installing Windows 11?
Answer: Yes. Backing up your data before any major update or installation is crucial to prevent data loss.
