Windows Update Catalog Down

Question

Windows Update Catalog Down

Carl Green (SiS) 6

https://www.catalog.update.microsoft.com/home.aspx

Trying to download any updates if very hit and miss, the download button shows a blank popup window most of the time or get the following error:

The website has encountered a problem

[Error number: 8DDD0020]

Carl Green (SiS) 6 Reputation points

2026-06-10T19:09:48.7066667+00:00

Microsoft AI who uses IE anymore, I have tried Edge, Chrome and Firefox they all don't work very well today.
ERIC SHIELDS 0 Reputation points

2026-06-11T01:34:46.7866667+00:00
I’ve been experiencing this issue since 6/9, which aligns with the release of the June Patch Tuesday updates. I normally download these updates manually for air‑gapped servers, but attempting to use the direct download links now results in the error shown in the attached image.

The problem isn’t limited to my environment. Colleagues and friends have reproduced the same behavior when accessing the Microsoft Update Catalog from both business and residential ISPs, and across multiple operating systems and browsers, including:

Operating systems tested:

Windows 11

Windows Server 2022

Windows Server 2025

macOS

Browsers tested:

Edge

Chrome

Firefox

Safari

All combinations produce the same error.

1 answer

Your answer

Carl Green (SiS) 6 Reputation points

2026-06-10T19:09:48.7066667+00:00

Microsoft AI who uses IE anymore, I have tried Edge, Chrome and Firefox they all don't work very well today.
ERIC SHIELDS 0 Reputation points

2026-06-11T01:34:46.7866667+00:00

I’ve been experiencing this issue since 6/9, which aligns with the release of the June Patch Tuesday updates. I normally download these updates manually for air‑gapped servers, but attempting to use the direct download links now results in the error shown in the attached image.

The problem isn’t limited to my environment. Colleagues and friends have reproduced the same behavior when accessing the Microsoft Update Catalog from both business and residential ISPs, and across multiple operating systems and browsers, including:

Operating systems tested:

Windows 11

Windows Server 2022

Windows Server 2025

macOS

Browsers tested:

Edge

Chrome

Firefox

Safari

All combinations produce the same error.

Answer 1

Hello, you can try to fix this by clicking the settings icon to the left of the URL, navigating to the site-specific permissions, ensure that JavaScript and DOM storage are permitted and changing "Insecure content" from Block to Allow for the Microsoft Catalog domain.

Also, you got a point that nobody using IE these days, but the infrastructure of the Update Catalog site still relies heavily on legacy web components and URLs that modern browsers treat as unsecure mixed content. When you use Edge, Chrome, or Firefox, they might block these background HTTP download streams from an HTTPS page, which causing the crash.

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Windows Update Catalog Down

1 answer

Your answer