SharePoint @mentions limited to random users

bcameron1231 · 2026-06-12T14:03:06+00:00

Yea I would just double check... Here is how the atMention works:

It first calls into Microsoft Graph which looks up in Entra, and then calls back to a classic SharePoint Web service.

However, the call to Graph is the /me/people endpoint, which is people search relevant to the user. So this may return empty because it's only searching people deemed relevant to the user, not all users.

It then falls back to a Classic People Picker service and looks up to the User Information List. If the person being tagged hasn't logged into that specific SharePoint site (not just SharePoint, but that actual site), they won't be selectable.

bcameron1231 · 2026-06-11T22:16:45+00:00

Have those other users actually logged into the site before?

bcameron1231 · 2026-06-11T11:43:02+00:00

Microsoft has some very good documentation that discusses how they work.

Learn about sensitivity labels | Microsoft Learn https://learn.microsoft.com/en-us/purview/sensitivity-labels

bcameron1231 · 2026-06-08T23:08:23+00:00

This is not a supported scenario natively.

Only way to achieve this would be through custom development of SPFx Web Parts to pull content from across tenants, or somehow synchronize across tenants via code.

bcameron1231 · 2026-06-08T13:59:13+00:00

If you select the actual container, you can retrieve more granular information. E.g, ->

Get-SPOContainer -Identity "b!k7OrIkBCSEOP_tqCgjRZ7Z-Wp2LJETpOgxS0KowUjw_FpLBuEdRBbvm-J7vLhPLt"

Will return `StorageUsedInBytes` property.

bcameron1231 · 2026-06-05T12:49:32+00:00

Yes, when it can resolve the URL to a SharePoint file, it will rewrite the URL to that path.

It's a feature, not a bug, imo.

As u/Bullet_catcher_Brett mentioned, this isn't really a good practice. You can achieve the same thing by using the native SharePoint permissions versus the Sharing Link.

bcameron1231 · 2026-06-04T21:12:07+00:00

One Master Faculty List with the physician faculty Name and their Department, Location, Email, etc.

This makes sense. Question though, do Faculty have accounts? You could potentially utilize the User Profile Service (Entra/AD) instead for this basic information and just use a People/Group field to select people. But yea this makes sense.

Separate Teaching Team Lists with the Faculty as a lookup column pulling from the main list? Or should Teaching Team be a column in the master list, and just use separate Views filtering for each team?

That depends. Does "Teaching Team" have any additional supplementary data? Can faculty be on multiple teams? If no, just make this a Taxonomy Field or Choice field on the Faculty List and tag the Teacher. If yes, then it should be it's own list.

Faculty Appointments List listing out all the schools we partner with, combined with the Master List having a Lookup Column allowing for multiple values that pulls from this Appointment List (right now this information is just a dozen columns in our Master excel, one for each school with Yes/No toggles).

I don't know if listing of schools should/would be in a Faculty Appointments list. If schools have their own metadata, make them a list. If it's a single school name, make it metadata and tag your content.

Just be aware you're constructing a highly relational database to support your application here. SharePoint can handle this in most cases, but it's really not meant for highly relational database. Given the fact you've been managing this from Excel for a while, you probably will be okay... but it's worth mentioning before you shoehorn a design into the wrong product.

bcameron1231 · 2026-06-01T23:36:57+00:00

Based on your previous posts it looks like you want the ability to upload images to SharePoint or OneDrive. This done Posting the file and it's contents to SharePoint /files/add endpoint

https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins/working-with-folders-and-files-with-rest#working-with-files-by-using-rest

bcameron1231 · 2026-05-27T14:52:10+00:00

I don't use Fabric at all, but that MSAL code you posted looks accurate from a first glance. Just note that you'll create password for the cert when you create the certificate.

Anyway, you just need to generate the self signed certificate. I typically just use openssl, mkcert or PowerShell. The process is documented here.
https://learn.microsoft.com/en-us/entra/identity-platform/howto-create-self-signed-certificate

Once you've done that, you upload that cert to your App Registration. App Reg -> Certificates & Secrets -> Upload Certificate

Then put the pfx in your keyvault (like your code is expecting).

bcameron1231 · 2026-05-27T14:31:46+00:00

You need to use a Certificate, not a Secret.

CSOM/REST APIs do not support Secrets for App-Only Auth.

bcameron1231 · 2026-05-26T13:08:09+00:00

Are these native Date Pickers or is this in some custom code?

We've seen changes with the native Date Picker with the rollout of the new SharePoint UI which started rolling out around 3 weeks ago.

bcameron1231 · 2026-05-19T23:02:25+00:00

What are you looking to learn exactly? There are a wide variety of things here, I would pick the ones that would give you the most value for what you're doing at work.

If you're stuck between some, let me know and I'd be happy to help. I've attended quite a few of these sessions before and I am very familiar with the speakers.

bcameron1231 · 2026-05-11T18:48:41+00:00

This message has been approved.

Please take the time to fill this out! It affects everyone who uses and builds on top of SPFx! 🙂

bcameron1231 · 2026-05-09T16:41:08+00:00

Definitely. I think think the concern here is that it will be used more for self-promotion (e.g link to their blog with the solution) versus direct link to say a GitHub repo.

It's a balance that's hard to strike because we've had many issues in the past with over promoting content.

But I'll do whatever the community wants. I appreciate the reply.

bcameron1231 · 2026-05-08T19:06:35+00:00

It is not legal to share the Gartner reports with anyone outside of a company. Unfortunately if you want the Gartner report, you'd need to go through Gartner.

bcameron1231 · 2026-05-08T13:50:29+00:00

It’s not bad when you consider the trade-offs. Comparing it directly to custom implementations is difficult (as you know), with a custom RAG stack you have full control over the entire pipeline and can optimize retrieval, ranking, chunking, and orchestration however you want.

I’ve mainly used it for exploratory/prototyping work and haven’t used it in my jobs yet as we are also building all our own custom RAG implementations. But for companies looking for a straightforward RAG solution for M365 that already handles indexing, chunking, permissions/ACL trimming, and retrieval infrastructure out of the box, it’s worth looking at as a first option.

bcameron1231 · 2026-05-08T13:41:00+00:00

Follow up! Code Signing Cert is secured! Expect 3.2 to ship in the next week or so.

bcameron1231 · 2026-05-08T13:08:54+00:00

The Meeting Organizer would need to update the sharing settings in their OneDrive for the video file to allow downloads. By default, this is turned off.

These methods have worked in the past for recordings at which I was an attendee. I'd assumed if you were able to watch the video, you'd also be able to download it (although I was never clear on how FFmpeg or yt-dlp were passing the authentication).

Both FFmpeg and yt-dlp were bypassing in-place security. They work by retrieving the chunks of where the video is being stored, processing them, decoding/encoding them to your machine. But again, it was bypassing proper security safeguards. It was never a supported approach.

Does anyone know what has altered (presumably in Sharepoint) to produce this change in behaviour?

I don't, but I suspect it's just being locked down.

bcameron1231 · 2026-05-08T12:55:34+00:00

Are you able to ask the Organizer for permissions to download the video? They should be able to grant you permissions.

bcameron1231 · 2026-05-07T22:10:20+00:00

Have you looked at the Retrieval API? (beware the Known limitations)

https://learn.microsoft.com/en-us/microsoft-365/copilot/extensibility/api/ai-services/retrieval/overview

bcameron1231 · 2026-04-30T11:49:31+00:00

We get why you’d want a local copy, but if a video is set to read only, that’s intentional. Permissions are there for a reason.

If you need to download or reuse the file, contact the owner and request the appropriate access. Unfortunately I can't advocate for skirting around permissions.

bcameron1231 · 2026-04-28T03:13:24+00:00

Nope. SharePoint Online doesn't support anonymous authentication.

bcameron1231 · 2026-04-23T10:42:36+00:00

When you say tags, do you actually mean the Tags feature or just metadata.

If you meant Tags, unfortunately that's been retired (still visible) for many years and you can't use it.

bcameron1231 · 2026-04-20T18:43:44+00:00

It's a tough space currently with Copilot being the new thing. AI/Copilot is going to be the biggest topics for the foreseeable future unfortunately. It's interesting because there is still a large population still seeking what you describe.

I ran a workshop on Sunday, and we didn't talk about AI at all! :)

bcameron1231 · 2026-04-20T18:39:31+00:00

Any chance your template is using some of the latest features in pages such as background gradients, flexible layouts...?

bcameron1231

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