Microsoft 365 Outlook email dowlnoad html issues

Question

Microsoft 365 Outlook email dowlnoad html issues

G Atkins 0

Classic Outlook shows the error ‘Some web page files couldn’t be downloaded.’
SecureTemp folder missing entirely — no Content.Outlook, no OLK folders, no OutlookTemp or OutlookCache.
Two full Office reinstalls and new profiles didn’t fix it.
Outlook cannot register its HTML preview handler.
SaRA no longer available to home users and no MS help system is working correctly for home users.

0 comments

1 answer

Your answer

Answer 1

Allan Solomon Mejia 10,465

Hello @G Atkins

Since two Office reinstalls and a new Outlook profile made no difference, stop focusing on the Outlook profile or looking manually for Content.Outlook. This may instead involve the Windows/Office HTML rendering components or something intercepting web content.

First, test Classic Outlook in Safe Mode:

outlook.exe /safe

If HTML messages work correctly there, disable COM add-ins and re-enable them individually. Microsoft recommends Safe Mode to isolate Outlook add-in conflicts.

If the issue remains in Safe Mode, run the Classic Outlook Advanced Diagnostics through Windows Get Help. SaRA hasn't simply been removed without replacement. Microsoft migrated its Outlook diagnostics into Get Help in 2026, and you can find the diagnostic output under %LocalAppData%\GetHelp.

Since reinstalling Office doesn't fix it, I would also test the same mailbox under a new Windows user account, not just a new Outlook profile. If it works there, that strongly points toward a Windows user-profile/HTML cache or configuration problem. If it fails there as well, investigate system-wide security software, web filtering/proxy software, and Windows components.

Also, don't manually create SecureTemp, OutlookTemp, or OutlookCache folders. The absence of those exact folder names isn't evidence of the problem on its own.

References:

Classic Outlook troubleshooters

SaRA diagnostics migration to Get Help

Help make this community better for everyone: if this answer resolved your issue, please accept it or upvote it. If not, share more details in a comment so we can continue the discussion and find the right solution.

G Atkins 0 Reputation points

2026-09-01T08:50:25.4833333+00:00

Understand what you are saying, but deep research over several days shows vital Outlook components missing and not recoverable. It seems absolutely clear that the problem lies with Outlook and not with every HTML email that I receive, but the issue commenced spontaneously within a previously 100% working instal of M365 Office / Outlook. Safe mode doesn't go nearly as deeply into the system as I have been already but thanks for your advice.
Allan Solomon Mejia 10,465 Reputation points

2026-09-01T14:22:41.2066667+00:00

Hi @G Atkins

Thanks for the clarification. Since the problem started spontaneously on a previously working installation and persists after two Office reinstalls and a new Outlook profile, I agree that repeatedly recreating profiles or reinstalling Office is unlikely to add much value.

One thing worth noting is that several Classic Outlook HTML/rendering issues during 2026, including problems displaying images and other HTML content, some of which required Outlook-team fixes rather than local repairs.

At this point, capture your exact Outlook version/build and update channel under File → Office Account → About Outlook, and submit the issue through Help → Support/Feedback with the exact “Some web page files couldn't be downloaded” error.

Don't manually reconstruct supposedly missing Outlook folders/components unless specifically required. Their absence may be a symptom, not the underlying cause.

Given everything you've already tried, escalation with the exact build information is probably more useful now than another reinstall.
G Atkins 0 Reputation points

2026-09-01T16:24:29.89+00:00

Thanks for that. After days of trying to fix this with expert support from elsewhere I finally tried to get Microsoft involved and I discovered that for MS 365 Office for Home Use Microsoft funnels all requests for support from whichever entry point you use through the same flow and all end up with asking if you would like a callback or a chat session. I tried callback more than once and the cloud based VOIP telephone system crashed at the start of each call. I then opted for chat, only to find that the system repeatedly diverted my case to the faulty VOIP call back system. So what I have is an app which costs me in excess of £100 per year which Microsoft is, by design or through incompetence, failing to support. It is quite scandalous especially as the SaRA repair tool which might have solved the problem has been withdrawn from other than enterprise use before a working alternative has been put in place. I am so angry and there is absolutely nothing I can do.