Participant

Answered

WINDOWS 7 I keep getting WinHttpWebSocketCompleteUpgrade Message

Forum|Forum|6 months ago
October 21, 2025
8 replies
7397 views

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

Correct answer 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.

ErikValeur

Participant

AnandSri,

It's been a while now.

Do you have any idea when this fix will be released?

Erik

Anand Sri Bhattacharya

Community Manager

Hi @ErikValeur

I hope you are doing well, and thanks for reaching out.

This issue has been fixed with the previous build of Acrobat/Reader.

Do you get any error message? What is the current version of Acrobat/Reader installed? Is it a 32-bit or 64-bit build? What is the current OS version?

If you are on the latest build of Acrobat/Reader: 26.001.21431 Planned update, Apr 14, 2026, and still getting the error message, please collect the logs using this link, and share it with us for further investigations, so that I can report it to the product team again: https://helpx.adobe.com/acrobat/kb/acrobat-diagnostics.html

Regards,

Anand Sri.

dimx

Participant

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

edis_disposable

Participant

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

Participating Frequently

It didnt work for me! I am utterly disgusted.

JulesBD

Participant

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

AnandSriCorrect answer

Legend

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

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

Legend

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

Legend

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

NickGama

Participant

Hello Meenakshi,

I have uninstalled the acrobat reader that was giving the error. Downloaded the 25.001.21265.

I am trying to install this but getting this message. Can you help?

Thanks, Nick Gama

AnandSri

Legend

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

@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.

Legend

Hi there

++ Adding to the discussion

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

~Amal

C

caribconsult

Participant

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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