Hello Tamás,
I'm Riza an Independent Advisor. Thank you for reaching out to the Microsoft Community. Let's work on resolving your issue together.
Based from your description, the error code 0xC18001013-0x90002 indicates an issue with the Windows Media Creation Tool when trying to download the ISO or create installation media. This error can be caused by various factors, including corrupted system files, incorrect date/time settings, or issues with Windows Update components.
Before trying to download the ISO directly, let's troubleshooting the Error 0xC18001013-0x90002 first.
Check Date and Time Settings:
Make sure that your computer's date and time are set correctly and synced automatically. Incorrect settings can sometimes interfere with Microsoft's servers. Go to Settings > Time & Language > Date & Time.
Run Windows Update Troubleshooter:
This built-in tool can often identify and fix issues with Windows Update. Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters and run the "Windows Update" troubleshooter.
Repair System Files:
Corrupted system files can cause various issues. Open Command Prompt as an administrator and run the following commands one by one:
sfc /scannow (System File Checker)
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
Restart your computer after these scans.
Clear SoftwareDistribution Folder:
This folder stores temporary Windows Update files, and sometimes clearing it can resolve download issues.
Open Command Prompt as an administrator.
Type the following commands one by one, pressing Enter after each, to stop relevant services:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
Open File Explorer and navigate to C:\Windows\SoftwareDistribution.
Delete all files and folders inside the SoftwareDistribution folder.
Go back to Command Prompt and type the following commands one by one to restart the services:
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
If issue persists, let us know so we can move forward to a more advanced troubleshooting steps.
Best Regards,
RizaP