Easy Tech TutsHow to Comment in Microsoft Loop Easily 2026
By Impran M NLast checked against official docs
Microsoft Loop has two different ways to leave a comment, and they look nothing alike. On a table or board, a comment bubble opens an Active comments thread tied to that component.
In ordinary text, you type // (or press Ctrl+Alt+M) and Loop drops an inline comment carrying your name straight into the page. This guide covers both, plus how @mentions pull a teammate into the conversation. The walkthrough screens show the table method on a sample page; the inline method comes from Microsoft's own documentation.
01Open your workspace
Go to loop.microsoft.com and sign in with a personal Microsoft account or a work or school account. The home screen greets you by time of day and has three tabs: Workspaces, Recent components and pages, and Ideas. Pick the workspace that holds the page you want to discuss, either from the list on the left or from the grid.
02Go to the page and the content you want to discuss
The workspace sidebar lists every page, such as Project Brief, Meeting Notes, Project Planning and any sample pages Loop generated. Open the one you need and scroll to the exact block.
Here it's a Sample Loop page with a live Tasks table showing sample work, due dates and status buckets like Done and To do. What you're commenting on decides the method.
A table or board uses the comment bubble in the next step. Plain text uses the inline method further down.
03Open the comment box on a table
Hover near the top-right corner of the table and click the small comment bubble that appears. A comment field opens beside the component under an Active comments heading, with an "Add a comment..." prompt. The thread stays next to the table, so anyone who opens the page later sees the feedback beside the thing it refers to.
04Write the comment, @mention anyone who needs to act, and post
Type your note. To bring someone in, type @ and start their name.
Microsoft says a mentioned person gets an activity feed notification that takes them straight to the component, which beats hoping they spot it. Post the comment.
It shows up in the Active comments panel with your name and a "Just now" timestamp; in this example it's a short "Good tasks" note on the Tasks table. Other people on the page can open the thread and reply beneath it, which keeps a discussion in one place.
05Comment on text with // or Ctrl+Alt+M
Paragraphs and lists don't get a comment bubble. To comment on existing text without editing it, click where the note should go and type // followed by a space, then write.
Loop attributes the comment to you by name. The keyboard shortcut Ctrl+Alt+M does the same thing on both Windows and Mac, according to Microsoft's Loop shortcut list. The same // trick works inside Loop components shared in Teams, Outlook and OneNote, so you can comment in whichever app you're reading the component from.
When it doesn't work
Typing @ doesn't find the colleague you want
Why: The person usually hasn't joined the workspace or been given access to that page, so Loop has no one to suggest.
Fix: Share the page or workspace with them first, then add the @mention again.
No comment bubble appears over a paragraph
Why: The bubble belongs to components like tables and boards. Text takes inline comments instead.
Fix: Type // and a space where the comment should sit, or press Ctrl+Alt+M.
Frequently asked questions
How do I add a comment in Microsoft Loop?
On a table or board, hover over it, click the comment bubble, type in the "Add a comment..." box and post. In text, type // and a space (or press Ctrl+Alt+M) and write your comment inline.
What is the keyboard shortcut for a comment in Loop?
Ctrl+Alt+M adds an inline comment with your name, on Windows and on Mac.
Does an @mention in a Loop comment notify the person?
Yes. Microsoft's documentation says a mentioned person receives an activity feed notification that links to the component. They need access to the page for it to be useful.
Can I comment on a Loop component inside Teams or Outlook?
Yes. Loop components stay in sync wherever they're shared, and typing // inside one adds a name-attributed comment the same way it does on a Loop page.
Sources and last check
The table-comment click path and screens come from a recorded walkthrough of the Loop web app. The // inline comment, the Ctrl+Alt+M shortcut and @mention notifications were checked against Microsoft Support documentation in September 2026 and added to this guide. An earlier claim about resolving threads with a checkmark was removed because Microsoft's public help pages don't document it.
About the author
Impran M N
I've been hooked on technology for as long as I can remember — especially the new tools and AI apps that seem to land every other week. Easy Tech Tuts is where I write up whatever I've just worked out: I do the task in the real product, record the screen, and turn it into the guide I wish I'd found first.
