OneDrive Excel Embed Broken Probably After CDN Update – odsp.react.lib 404 Error

Question

OneDrive Excel Embed Broken Probably After CDN Update – odsp.react.lib 404 Error

Sasa Obradovic 5

I have two Excel workbooks stored in OneDrive Personal and embedded on my WordPress website using Excel's official Embed feature. Both worked perfectly for years, but over the past few days, they started loading slowly and eventually stopped displaying altogether.

The workbooks still open normally in OneDrive, but the embedded versions show completely blank frames across multiple browsers and devices.

I also tested the iframe independently of WordPress and found the following errors in the browser console:

GET https://res-1.cdn.office.net/files/sp-client/odsp.react.lib-8e01e1f0.js — 404 (Not Found)

Uncaught Error: Script error for "odsp.react.lib"

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I found another Microsoft Community discussion reporting a very similar issue last August, it was fixed but seems it appeared again.

Link to similar issue

I have already opened an official support case with Microsoft OneDrive Support and currently waiting for their investigation and response.

Since other users are experiencing similar problems, this appears to be a broader issue with Excel's Embed functionality rather than something specific to my workbooks or WordPress website.

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2 answers

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Answer 1

Kai-H 30,565 Microsoft External Staff Moderator

Hi, Sasa Obradovic

Thanks for the detailed write-up and the console screenshot. The blank frame comes from a missing file on Microsoft's side, so the OneDrive embed viewer can't start no matter which site hosts the iframe. The same thing happened from August 21 to August 27 and was fixed on Microsoft's end without any changes from users.

Here are some suggestions you can try while you wait for the fix:

Use the Office Web Viewer instead of the OneDrive embed. Upload a copy of each workbook to your WordPress Media Library, copy the file's URL, and use this in a Custom HTML block: https://view.officeapps.live.com/op/embed.aspx?src=YOUR_FILE_URL The file has to be public and reachable over HTTPS. It's view-only, and you'll need to re-upload the file whenever you update the workbook. Embedded File Viewer

If visitors only need to see the data, it's recommended that you import the workbook into a table plugin like TablePress. It reads .xlsx files directly and doesn't depend on any Microsoft service, so it keeps working even when the embed breaks again. Embed Excel Viewer in Website

Add your details to the Tech Community thread about the same breakage that started around October 31. More reports on one thread help it get noticed by the right team. Embedding Word/Excel files from OneDrive stopped working

Once Microsoft fixes it, switch back to your original embed code.

Sasa Obradovic 5 Reputation points

2026-11-03T15:39:28.57+00:00

Hi @Kai-H

Thank you for your detailed explanation and suggestions!

Unfortunately, neither Office Web Viewer nor TablePress would work for my situation. I have developed two interactive Excel-based calculators where visitors can enter their own data and receive calculated results based on their inputs.

The workbooks contain multiple sheets with formulas and nutritional databases, but visitors can only access the input and results interface. They cannot view the underlying sheets or download the workbooks.

Both calculators still work perfectly when opened directly in OneDrive, but neither displays when embedded on my WordPress website.

It seems my only option is to wait for Microsoft to fix the embedding issue. Hopefully, this will be resolved soon, as both calculators are important features of my website.

Thank you again for your help!
Kai-H 30,565 Reputation points Microsoft External Staff Moderator

2026-11-04T08:21:33.9166667+00:00

Hi, Sasa Obradovic

Thanks for explaining how the calculators work. You're right that the Excel embed is the only option that keeps visitors on the input and results screen without showing the other sheets or allowing downloads. For now, waiting for Microsoft's fix is the realistic path.

A couple of small things might help while you wait. You could add a short note above each calculator on your WordPress page, like "This calculator is temporarily unavailable due to a Microsoft service issue," so visitors know the blank space is temporary. Keep your current embed code exactly as it is, too. When this happened in August, the embeds started working again without any changes once Microsoft fixed it on their end.

It's also worth adding your case number and details to the Tech Community thread about this same issue. More reports there help it get noticed by the right team. Embedding Word/Excel files from OneDrive stopped working

If this keeps happening, you might eventually want to rebuild the calculators with a WordPress calculator or form plugin so they don't rely on the OneDrive embed. That's a bigger project, though, so it's only worth it if the problem keeps coming back.

Hope it gets fixed soon!
Kai-H 30,565 Reputation points Microsoft External Staff Moderator

2026-11-05T09:16:14.18+00:00

Hi, Sasa Obradovic

Is there any update from you?

If yes, please feel free to let me know
Sasa Obradovic 5 Reputation points

2026-11-05T17:30:18.1866667+00:00

@Kai-H they are still working on it
Sasa Obradovic 5 Reputation points

2026-11-05T17:40:55.5533333+00:00

@Kai-H I just went to collect the logs as they requested and discovered that both calculators are working again. Yay!
Sasa Obradovic 5 Reputation points

2026-11-05T17:53:49.5+00:00

@Kai-H and thanks for suggestion about WP calculator, I have to figure out how to create it and still use my existing Excel with all data and formulas.

Answer 2

The odsp.react.lib-8e01e1f0.js 404 is a Microsoft-hosted EmbedView dependency failure, so it cannot be repaired in WordPress or by changing the workbook; keep the support case open and temporarily replace the embeds with direct workbook links.

The failure matches the reported OneDrive EmbedView incident: its loader requests an odsp.react.lib-*.js bundle from Microsoft’s Office CDN, the CDN returns 404, and the viewer cannot initialize, leaving a blank frame even though the document itself remains available ^1^.

Update the existing support case

Since the issue is already reproduced outside WordPress and across browsers/devices, add the following evidence to the open case rather than repeating local browser or site troubleshooting:

Product/account type: OneDrive Personal – Excel Embed
Failed resource: https://res-1.cdn.office.net/files/sp-client/odsp.react.lib-8e01e1f0.js
Response: HTTP 404 / net::ERR_ABORTED
JavaScript error: Uncaught Error: Script error for "odsp.react.lib"
Behavior: workbook opens normally in OneDrive, while its direct embed URL produces a blank viewer
Scope: both workbooks, multiple browsers and devices
Approximate first occurrence, timestamp and time zone of a recent failure
A HAR/network trace and console screenshot, if the support upload form permits them
The embed URL and support reproduction steps; do not post a public embed URL if the workbook contains sensitive information

Ask that the case be escalated to the team responsible for OneDrive/Office EmbedView and the res-1.cdn.office.net deployment. The filename hash can change between deployments, so the important signature is the missing odsp.react.lib-*.js dependency rather than that exact hash.

Temporary workaround

Until Microsoft restores or corrects the CDN reference:

Replace each blank iframe with a normal link or button that opens the workbook directly in OneDrive or Excel for the web.
If public access is inappropriate, retain the workbook’s existing sharing restrictions rather than creating a public workaround.
Restore the iframe only after its direct embed URL loads successfully and the odsp.react.lib request no longer returns 404.

Excel workbooks stored on OneDrive are supported for embedding in websites, and changes to the workbook should appear after viewers refresh the page ^2^. Therefore, a direct OneDrive link is only a temporary alternative, not an equivalent embedded experience.

When regenerating the embed code is relevant

Microsoft’s documented recovery for an embedded item whose file or link changed is to remove the old HTML, select the file in OneDrive, choose More options → Embed → Generate, and insert the newly generated HTML ^3^.

That branch applies only after the Microsoft-hosted script starts loading normally:

If a newly generated embed still requests odsp.react.lib-*.js and receives 404: no website-side change will resolve the current failure.
If the script returns successfully but the old iframe remains broken: regenerate and replace the embed HTML, because the original embed link may then be stale.
If the direct embed works but WordPress does not: only then investigate WordPress caching, security headers, or iframe restrictions.

The public OneDrive issues page can be monitored for a posted incident or workaround, and it directs users to Microsoft’s Office Online service-status page for access problems ^4^. Absence from that page does not provide a repair for the CDN 404; the existing support case remains the appropriate route for status and escalation.

References