Hi Kyncl Jaroslav,
This type of error usually indicates a temporary issue with the download service or a mismatch between your account permissions and the product you are trying to access. I recommend first clearing your browser cache or trying a different browser, as cached credentials can sometimes block the download. If the issue persists, please attempt the download using the Microsoft Volume Licensing Service Center (VLSC) or the Microsoft 365 Admin Center, depending on where your subscription is managed.
It is also important to confirm that your account has the correct licensing rights for the ISO you are requesting. In some cases, switching to a direct download via the Media Creation Tool or using the Visual Studio Subscription portal (if applicable) resolves the error. If none of these steps work, please share the exact ISO version you are trying to obtain so we can verify entitlement and provide a direct alternative path.
If this explanation is useful, please hit “Accept Answer” so I know your concern is resolved.
Jason.