dasHost.exe is causing udp broadcast flood on 22222 or 10004 ports...

Anonymous
2024-10-16T07:33:40+00:00

Hi i have problem with Device Association Framework Provider Host..

I checked das host is running from right place C:\Windows\System32

Its signed by ms.

How to stop it? It is hundreds broadcast connections per miute..

System is updated, antivirus is working.

Windows for home | Windows 11 | Internet and connectivity

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  1. Anonymous
    2025-03-25T03:53:15+00:00

    抱歉我的母語是中文,

    經過前面的訊息至今,我觀察的分享...

    會發生的電腦是 Windows 11 24H2 且使用新版列印畫面介面

    我發現預先載入不更新的軟體,基本上會觸發的電腦就會觸發。

    當確認會觸發的電腦,基本上 小畫家 筆記本 相片的列印視窗打開都可以觸發。

    且不用列印,只需開啟新版列印視窗即可。

    開一次會少量,但是不會結束(即使你關掉所有的軟體),

    隨著工作時間增加,觸發次數越多,

    發UDP的頻率會隨著次數增加,直到DAS服務重啟或重開機才會歸零。

    所以通常引發影響網路內問題的時候,通常發UDP的電腦數量夠多,或是運行時間內觸發夠多次就可以產生。

    我遇過嚴重影響其他公司案例,他是11天不關機的工作累積到高超頻發送頻率。

    至於前面有人提到的Edge/Chrome 我的驗證環境不會(總是更新到最新版本),

    但軟體特性是時常更新,不像上述的應用小畫家 筆記本 相片(幾乎萬年不更新的預載軟體),

    也許Chrome/Edge在某次更新就修正了,至少目前我確認可以觸發的電腦,

    Chrome/Edge開啟列印不會發生,我認為目前的版本列印介面是瀏覽器自家的所以不會了,

    Firefox列印介面也是自家的,但它留下一個可以呼叫Windows新版介面出來,一叫出來也會發生。

    但判斷關鍵很簡單,小畫家筆記本會發生的,其他軟體只要能呼叫內建新版列印畫面,就會發生。軟體自家的列印介面並不一定會。 可能還有更多沒被發現也會觸發此問題的軟體,但可以用這方式判斷。

    可以透過Wireshark判斷,我個人是寫專用程式去偵測網內有無此現象的電腦,

    讓我預先知道風險並處理掉,不像大多數的人是經過報修才知道又發生了。

    (但這問題也增加了工作項目)

    已知熱感出單機EPSON TM系列網卡介面會被影響,不過我已經有辦法透過偵測封包程式預知問題,讓我的工作沒這麼充滿不確定性。

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  2. Anonymous
    2025-03-24T07:10:51+00:00

    2025-03 update依然有此問題。

    但我自己找到重現問題的方法了。

    Win11 24H2,當我們大多數軟體按下列印,

    若跳出新版的列印畫面,就會產生UDP的封包,

    關閉列印畫面不列印,還是會保持在背景。

    不一定要Chrome edge 小畫家,只要可以叫出該介面就可以。

    隨著開啟次數越多,頻率會越高。

    只要能將電腦的列印介面回到舊版,就可以避開此問題復發。

    至少我的實驗環境是如此。

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  3. Anonymous
    2025-03-24T04:17:10+00:00

    Can you share how to trigger this issue through Chrome? Thx.

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  4. Anonymous
    2025-03-21T07:34:05+00:00

    2025-02 still

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  5. Anonymous
    2025-03-20T13:32:40+00:00

    Use your Firewall to block the 3 ports its broadcasting on. Try it on 1 computer to make sure performance is not affected first. It's wild that Microsoft has not addressed this in 6 months.

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