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edward_stod227
Participant
October 21, 2025
Beantwortet

WINDOWS 7 I keep getting WinHttpWebSocketCompleteUpgrade Message

  • October 21, 2025
  • 7 Antworten
  • 6726 Ansichten

When I start up my computer using Windows 7 i keep getting this message from adobe acrobat reader program I installed the procedure entry point WinHttpWebSocketCompleteUpgrade could not be located in Dynamic Link Library WINHTTP.dll in startup error why

Beste Antwort von AnandSri

Hi All, ​@hcidata  ​@julienprod  ​@caribconsult  ​@edward_stod227  ​@JulesBD  ​@ErikValeur  ​@QuSu  ​@brucek60882480  ​@HElaz  ​@Ayesh786  ​@mzkitti07  ​@NickGama 

 

Thanks for your cooperation and patience on this.

 

The issue has been addressed with the latest build of Acrobat and Reader version 25.001.21265. Planned update, Mar 02, 2026. Check for any pending updates by navigating to Menu > Help> Check for Updates. Install the updates, restart the app and the machine, and try again as suggested by the Adobe employee.

 

Let us know if you experience any issues.

Regards,

Anand Sri.

7 Antworten

dimx
dimx
Participant
March 5, 2026

The reader works with 25.001.21265 update, but “WinHttpWebSocketCompleteUpgrade” error is NOT fixed.

edis_disposable
edis_disposable
Participant
March 6, 2026

For a 64-bit system, having this in x64 fixed that (and reportedly original) problem:

Visual C++ Redistributable for Visual Studio 2015
https://www.microsoft.com/en-in/download/details.aspx?id=48145

Ayesh786
Ayesh786
Participating Frequently
March 4, 2026

It didnt work for me! I am utterly disgusted.

JulesBD
JulesBD
Participant
March 4, 2026

Hi Anan,

Many thanks for the update.  I too get the WinHttpWebSocketCompleteUpgrade messages, so hopefully that problem is now fixed.  However, my immediate problem is that I still get the error  message "Missing api-ms-win-core-winrt-|1-1-0.dll" on starting Acrobat Reader.  So I can't even start Acrobat Reader to get to the “Menu>Help>Check for Updates” link you mention.  Twice I've re-installed Acrobat Reader (version for Windows 7) from the adobe website, as suggested on the error message, but no change.  Please, how do I get past the "Missing api-ms-win-core-winrt-|1-1-0.dll" error on Acrobat Reader startup?  Many thanks for any help and advice.  

Jules BD

AnandSri
AnandSriAntwort
Legend
March 3, 2026

Hi All, ​@hcidata  ​@julienprod  ​@caribconsult  ​@edward_stod227  ​@JulesBD  ​@ErikValeur  ​@QuSu  ​@brucek60882480  ​@HElaz  ​@Ayesh786  ​@mzkitti07  ​@NickGama 

 

Thanks for your cooperation and patience on this.

 

The issue has been addressed with the latest build of Acrobat and Reader version 25.001.21265. Planned update, Mar 02, 2026. Check for any pending updates by navigating to Menu > Help> Check for Updates. Install the updates, restart the app and the machine, and try again as suggested by the Adobe employee.

 

Let us know if you experience any issues.

Regards,

Anand Sri.

H
hcidata
Participating Frequently
March 3, 2026

The update works for me.

If anyone followed my suggestions for using an old version and updated their C:\Windows\System32\drivers\etc\hosts file, you will have to remove the entries added for

127.0.0.1 activate.adobe.com

127.0.0.1 practivate.adobe.com

127.0.0.1 ereg.adobe.com

127.0.0.1 update.adobe.com

127.0.0.1 swupdl.adobe.com

127.0.0.1 genuine.adobe.com

 

Thank you for the swift resolution of this bug.

 

 

I have spent most of my life disturbing electrons. I hope they don't take offence.
    AnandSri
    AnandSri
    Legend
    March 3, 2026

    Thank you ​@hcidata for the confirmation that the latest build has fixed the issue for you, and for sharing the workaround. 

     

    Regards,

    Anand Sri.

    [Edited response]

    Meenakshi_Negi
    Meenakshi_Negi
    Legend
    March 3, 2026

    Hi All,

     

    Thank you for your patience.

     

    The issue has been addressed with the Acrobat and Reader update (25.001.21265) released yesterday. Please try updating Acrobat Reader if the application hasn’t been updated.

    For more information on the update, refer to the following help page: https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/continuous/dccontinuousmar2026.html#dccontinuousmartwentytwentysix.


    Let us know if you experience any issues.

     

    Thanks,

    Meenakshi

    dimx
    dimx
    Participant
    March 5, 2026

    This update did NOT fix “WinHttpWebSocketCompleteUpgrade” error.

      edis_disposable
      edis_disposable
      Participant
      March 7, 2026

      Get from microsoft this, should fix both recent errors (x64 for 64 Windows):

      Visual C++ Redistributable for Visual Studio 2015

      AnandSri
      AnandSri
      Legend
      March 2, 2026

      Hi All,

       

      The fix will be for Acrobat and Reader, and will be available with a public release very soon.

      Thanks for your patience and cooperation.

       

      Regards,

      Anand Sri.

      creative explorer
      Community Expert
      creative explorerCommunity Expert
      Community Expert
      October 21, 2025

      @edward_stod227 probably because your version of Windows 7 does not contain the necessary function that the newer version of Adobe Acrobat Reader is trying to use. Once Acrobat tries to load a modern feature that Windows 7 simply doesn't support, that's win you get the error message

      m
      Amal.
      Amal.
      Legend
      October 21, 2025

      Hi there 

       

      ++ Adding to the discussion 

       

      For more information, please check the help page https://adobe.ly/42R1Euh 

       

      ~Amal

      C
      caribconsult
      Participant
      February 21, 2026

      That page says nothing about Win7 nor is there a link to the correct file needed to add the missing link. Please offer some better help to us poor Win7 users.

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