[Problem/Bug]: Download fails on JS /w newpage #5196

MichaeI-GH · 2025-04-09T11:04:58Z

What happened?

Hi,
this occurred in an externally developed app of ours.

here's the examplecode I used:
(Here it's a .bin-File but in our Application it is a .doc file, both fail.)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Download Resource and Open in New Tab</title>
</head>
<body>
    <h1>Download and Open in New Tab Example</h1>
    <a href="javascript:void(0)" onclick="openInNewTab()">Click me to open the resource in a new tab</a>

    <script>
        function openInNewTab() {
            const url = "https://hil-speed.hetzner.com/100MB.bin";
            const a = document.createElement('a');
            a.href = url;
            a.target = "_blank"; // Opens in a new tab
            a.download = "100MB.bin"; // Suggests a filename for download
            document.body.appendChild(a);
            a.click();
            document.body.removeChild(a);
        }
    </script>
</body>
</html>

Thanks!

Importance

Important. My app's user experience is significantly compromised.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

135.0.3179.54

SDK Version

1.0.3230-prerelease

Framework

Winforms

Operating System

Windows 11

OS Version

22631.5039

Repro steps

(Get an example website, if not already available)
Open WV2 app
Klick Download link
Expected: The page opens & closes automatically + downloads the file in some visible way
Actual: The page opens but nothing else seems to happen

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Regression in newer Runtime

Last working version (if regression)

134.0.3124.93

The text was updated successfully, but these errors were encountered:

PhilipRieck · 2025-04-09T16:13:55Z

We are seeing the same behavior, and this is highly impactful to users.

Can confirm:
Working in 134.0.3124.93
Regression in 135.0.3179.54

Simply installing 135.0.3179.54 causes the issue to manifest.

In our application, one way we are using webview2 is to allow the user to access Sql Server Reporting Services. On clicking 'export to excel', the file download starts but never completes.

ParadoxZero · 2025-04-10T03:43:51Z

@PhilipRieck @MichaeI-GH
Are you folks using any specific app framework? Because the provided html worked fine for me in win32 sample app.

v135.0.3179.54

ParadoxZero · 2025-04-10T03:51:29Z

20250410-0346-38.0891527.mp4

This is how I tested it.

Please check if there are any crashes here. Either visit "edge://crashes" from the webview or find dumps in the User data folder. For more details - https://github.com/MicrosoftEdge/WebView2Feedback/blob/main/diagnostics/crash.md

MichaeI-GH · 2025-04-10T07:31:36Z

As mentioned, we are using WinForms. If that's not what you're asking, please elaborate.

The edge://crashes-page does not provide any crashes afterwards.

To me it seems that the new tab opened by JS blocks the download.

kentrob · 2025-04-10T10:40:37Z

We are using the WPF control and seeing the same issue. What seems to happen is that a .tmp extension file is created in the Downloads directory but the process never completes and we are left with a gray window and the user never sees the downloads message. If you rename the .tmp file to the extension you were expecting (xlsx/pdf etc), the file is complete and useable.

janhavel1 · 2025-04-10T16:23:34Z

Hello,

we have the same experience, we are also using WebView2 to host Reporting services reports; and now Export to Excel stopped working.

WebView2 initialized from Microsoft.WebView2.FixedVersionRuntime.134.0.3124.93.x64.cab works,
WebView2 initialized from Microsoft.WebView2.FixedVersionRuntime.135.0.3179.54.x64.cab it does not work.

I was able to reproduce it by running your WebView2WindowsFormsBrowser sample (https://github.com/MicrosoftEdge/WebView2Samples) and navigating it to a public Reporting Services report at https://ssrs.fdot.gov/Reports/report/PDA%20Reports/Public%20Reports/ShortList

Please have a look what has changed and fix it.
Thank you very much.
Regards
Jan

AceCoderLaura · 2025-04-11T04:30:24Z

Same issue for us on SDK 1.0.1150.38 and runtime 135.0.3179.54.
Issue doesn't occur on runtime 134.0.3124.93.

heinzik · 2025-04-11T11:51:50Z

Same issue for us

gabrielrvd · 2025-04-11T12:52:26Z

Same issue than @janhavel1 here, WPF sdk 135 not work and 134 works

maxsukholovyy · 2025-04-11T15:36:27Z

Same issue for us

JamieBurm · 2025-04-13T23:59:20Z

We're using this in our software products and now have clients hitting this issue and complaining. This is going to start affecting a lot of people so an indication on when this may be fixed would be much appreciated.

iamalexninov · 2025-04-14T06:41:07Z

@ParadoxZero some information for all of us. What is happening, are you working on the issues and how to continue from now, because our clients complaining about this issue?

LaughingJohn · 2025-04-14T09:25:12Z

Just wanted to add my voice. We have the same problem as @janhavel1 with report server. We host report viewer in a webview2 in WPF. We're starting to get more and more complaints from our clients as the new webview2 version rolls out...

aledeniz · 2025-04-14T14:37:55Z

+1
same issue with us unfortunately. We observed it after 135.0.3179.73, but we may have not deployed 135.0.3179.54.

The navigation to download pdf, xls, doc, .. all formats is broken.

ParadoxZero · 2025-04-15T05:57:22Z

Folks, I managed to repro and understand the issue. Thanks a lot for all the help with diagnostics. Will update the thread once the fix has been merged.

ParadoxZero · 2025-04-21T03:36:15Z

The fix is available in version >= 137.0.3269.0. Please help me validate this.

DGrillonLCL · 2025-04-22T07:27:58Z

Tested using Canary 137.0.3275.0 and ChannelSearchKind registry key

Work well when downloading PDF files

FMI-ATL · 2025-04-22T10:28:25Z

@ParadoxZero, hello
Same problem for me !
Edge need to be updated on my computer ? or WebView2 ?
Where can I download WebView2 fixed version ?

MichaeI-GH · 2025-04-22T11:07:48Z

Also works for me on Canary, version 137.0.3275.0, using CoreWebView2ChannelSearchKind.LeastStable!

From what I recall, the window usually closes after starting the download & opens the downloads-popup in the original tab (like it does in Edge), which would be nice.

When do you plan on shipping this on stable?

mgMsquared · 2025-04-25T02:35:49Z

Interestingly I'm able to "view" pdf files.
if html page contains ... <a href="https://demo.com/mydoc.pdf" target="_blank" >mydoc.pdf</a>
However if the ext is .doc or .dotx .docx (Basically any office doc) I don't get download prompt.. just a {guid}.tmp is created in downloads folder
( If I rename the {guid}.tmp file ... to x.doc or what ever the original extension is ... file is valid)

If I right click on link/href tag I'm able to download file w/o issues.

btw CoreWebView2.DownloadStarting doesn't fire..
As other have mentioned.. it work in Edge as expected.

mgMsquared · 2025-04-25T12:12:00Z

The fix is available in version >= 137.0.3269.0. Please help me validate this.

Verified it works in 137.0.3281.0 (latest canary build at this time)
also (download) of .dotx .docx files works.

ParadoxZero · 2025-04-28T02:55:10Z

The fix has been cherry-picked to version >= 136.0.3240.37. It should go out to stable by end of the week. Everyone should be receiving updates by next week.

ParadoxZero · 2025-04-28T02:55:30Z

Closing the issue as fixed.

exaiwitmx · 2025-04-29T12:20:26Z

There seems to be more to it than just this fix.

I have two different versions of our application:

Old version of our application using Microsoft.Web.WebView2 1.0.705.50:

Canary 137.0.3288.0: Problem occurs
Stable 135.0.3179.85: Problem occurs
Old Fixed 134.0.3124.93: Problem does not occur

New version of our application using Microsoft.Web.WebView2 1.0.1418.22

Canary 137.0.3288.0: Problem does not occur
Stable 135.0.3179.85: Problem does not occur
Old Fixed 134.0.3124.93: Problem does not occur

I've verified that the versions given here were actually used when testing (by means of ProcessExplorer, which shows the msedgewebview2.exe-Processes created by our application.

As these versions of our application do not only differ in the version of Microsoft.Web.WebView2 they use, but also in the implementation of WebView2 integration, I do not know whether it is related to the version of Microsoft.Web.WebView2 or some other differences.
To narrow it down, I could upgrade the old application version to the newer version of Microsoft.Web.WebView2.

Fortunately, I do not need a fix for the old version of our application.

MichaeI-GH added the bug label Apr 9, 2025

github-actions bot added the regression label Apr 9, 2025

github-actions bot assigned ambikakunnath Apr 9, 2025

ParadoxZero self-assigned this Apr 10, 2025

JamieBurm mentioned this issue Apr 14, 2025

[Problem/Bug]: Download PDF no longer works in SQL report viewer #5201

Closed

fabiorocha added the tracked label Apr 14, 2025

This was referenced Apr 16, 2025

Browser, WebView2 update to 135.0.3179.73: PDF Viewer in child window not saving correctly eclipse-platform/eclipse.platform.swt#2022

Closed

[Problem/Bug]: Saved PDF from print dialog option "Save as PDF" is deleted after WebView2 dispose #5199

Closed

ParadoxZero mentioned this issue Apr 21, 2025

[Problem/Bug]: Downloaded file not getting renamed to original name after downloading is complete. #5211

Closed

ParadoxZero mentioned this issue Apr 23, 2025

[Problem/Bug]: Download failing for excel/pdf files #5212

Closed

ParadoxZero closed this as completed Apr 28, 2025

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[Problem/Bug]: Download fails on JS /w newpage #5196

[Problem/Bug]: Download fails on JS /w newpage #5196

MichaeI-GH commented Apr 9, 2025 •

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PhilipRieck commented Apr 9, 2025 •

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ParadoxZero commented Apr 10, 2025

ParadoxZero commented Apr 10, 2025 •

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MichaeI-GH commented Apr 10, 2025

kentrob commented Apr 10, 2025

janhavel1 commented Apr 10, 2025

AceCoderLaura commented Apr 11, 2025

heinzik commented Apr 11, 2025

gabrielrvd commented Apr 11, 2025 •

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maxsukholovyy commented Apr 11, 2025

JamieBurm commented Apr 13, 2025

iamalexninov commented Apr 14, 2025

LaughingJohn commented Apr 14, 2025

aledeniz commented Apr 14, 2025

ParadoxZero commented Apr 15, 2025

ParadoxZero commented Apr 21, 2025

DGrillonLCL commented Apr 22, 2025

FMI-ATL commented Apr 22, 2025 •

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MichaeI-GH commented Apr 22, 2025

mgMsquared commented Apr 25, 2025

mgMsquared commented Apr 25, 2025

ParadoxZero commented Apr 28, 2025

ParadoxZero commented Apr 28, 2025

exaiwitmx commented Apr 29, 2025

[Problem/Bug]: Download fails on JS /w newpage #5196

[Problem/Bug]: Download fails on JS /w newpage #5196

Comments

MichaeI-GH commented Apr 9, 2025 • edited Loading

What happened?

Importance

Runtime Channel

Runtime Version

SDK Version

Framework

Operating System

OS Version

Repro steps

Repros in Edge Browser

Regression

Last working version (if regression)

PhilipRieck commented Apr 9, 2025 • edited Loading

ParadoxZero commented Apr 10, 2025

ParadoxZero commented Apr 10, 2025 • edited Loading

MichaeI-GH commented Apr 10, 2025

kentrob commented Apr 10, 2025

janhavel1 commented Apr 10, 2025

AceCoderLaura commented Apr 11, 2025

heinzik commented Apr 11, 2025

gabrielrvd commented Apr 11, 2025 • edited Loading

maxsukholovyy commented Apr 11, 2025

JamieBurm commented Apr 13, 2025

iamalexninov commented Apr 14, 2025

LaughingJohn commented Apr 14, 2025

aledeniz commented Apr 14, 2025

ParadoxZero commented Apr 15, 2025

ParadoxZero commented Apr 21, 2025

DGrillonLCL commented Apr 22, 2025

FMI-ATL commented Apr 22, 2025 • edited Loading

MichaeI-GH commented Apr 22, 2025

mgMsquared commented Apr 25, 2025

mgMsquared commented Apr 25, 2025

ParadoxZero commented Apr 28, 2025

ParadoxZero commented Apr 28, 2025

exaiwitmx commented Apr 29, 2025

MichaeI-GH commented Apr 9, 2025 •

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PhilipRieck commented Apr 9, 2025 •

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ParadoxZero commented Apr 10, 2025 •

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gabrielrvd commented Apr 11, 2025 •

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FMI-ATL commented Apr 22, 2025 •

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