Quick answer: if every file is view-only and the title bar says "Unlicensed Product", Office isn't activated and is in reduced functionality mode. If only one file is read-only, it's that file: a Read-only setting, a lock, or full OneDrive storage. Either way, Free Pub Editor opens it editable.
Is Publisher read-only because it's been retired?
Probably not directly. Microsoft's retirement page says Microsoft 365 subscribers "will not be able to access Publisher on or shortly after October 1, 2026". It describes Publisher being removed, not switched to a view-only mode. One-off copies such as Publisher 2021 can, Microsoft says, still be installed and used.
Microsoft doesn't document any special read-only mode for retired Publisher. What it does document is how Office apps behave when they aren't licensed, and the everyday reasons a single file opens read-only. Those are the two things to check.
What is reduced functionality mode?
This is Office's own "view only" state. Microsoft's admin documentation says that in reduced functionality mode, the apps stay installed but "users can only view and print their documents", and editing and creating documents are disabled (Microsoft Learn).
Microsoft lists several things that cause it:
- Activation failed. You'll see "Unlicensed Product" or "Non-commercial use / Unlicensed Product" in the title bar, and Microsoft says "most features of Microsoft 365 or Office are disabled" (Microsoft Support).
- Your subscription expired. Microsoft says the apps revert to "view/print-only mode until a subscription is restored" (Microsoft Support).
- A work or school licence was removed, for example after someone leaves.
- The computer has been offline for more than 30 days.
Microsoft's licensing pages describe this for Office apps in general rather than for Publisher specifically. Publisher is listed among the apps covered by the "Unlicensed Product" article, though.
Why else might a single file open read-only?
Microsoft's article "Why did my file open read-only?" explains that "Read-only means you can only view or print", and gives these causes. It covers Office 2016 to 2024 in general, not Publisher by name.
- The file is marked Read-only. Right-click the file, choose Properties, and Microsoft says that if the Read-only attribute is ticked, "you can uncheck it and click OK." Files copied from old CDs or backups can end up marked this way.
- Your antivirus. Microsoft notes some antivirus programs open potentially unsafe files read-only.
- OneDrive is full. If the file lives in OneDrive and your storage is full, Microsoft says you can't save until you're back under your limit.
- The file came from the internet or email. Microsoft's Office apps can open these in Protected View, "a read-only mode where most editing functions are disabled." Microsoft's Protected View pages list Word, Excel and PowerPoint, not Publisher, so Publisher may behave differently.
- Someone else has it open. For files on SharePoint, Microsoft explains a file can be locked if another person has it checked out, or if the app crashed earlier and thinks it's still in use; restarting the computer can release that lock (Microsoft Support).
How can I tell which one it is?
| What you see | Most likely cause | What to try |
|---|---|---|
| "Unlicensed Product" in the title bar, all files view-only | Office not activated | Activation steps |
| All Office apps view-only after a renewal date | Subscription expired | Check your subscription; renewing won't restore Publisher |
| Only one .pub file is read-only | Read-only attribute or lock | Check Properties; close it everywhere; restart |
| Yellow bar on a file from email or the web | Protected View or similar | Select Enable Editing if you trust the file |
| File is in OneDrive and won't save | Storage full or sync issue | Check OneDrive storage |
| Publisher has gone completely | Removed from Microsoft 365 | See Publisher missing |
A quick test: open two or three different .pub files. If all of them are view-only, it's Office. If only one is, it's the file.
Will fixing the licence make Publisher editable again?
It depends on which Publisher you have.
- One-off copy (for example Office 2021): fixing activation should restore editing, as for any Office app. Microsoft says these copies can still be used after retirement, though they get no more updates.
- Microsoft 365: renewing or re-signing in fixes Word, Excel and PowerPoint, but Microsoft says Publisher is no longer included in Microsoft 365. Once the removal update reaches your computer, it won't come back.
How do I get an editable copy right now?
If you just need to change this week's newsletter or reprint a certificate, you don't have to solve the licensing first.
- Go to Free Pub Editor in Chrome, Edge, Safari or Firefox.
- Click Open and choose the .pub file, or drag it onto the page.
- Edit text, pictures and shapes as you normally would.
- Click Save for an editable .fpe copy, or Export PDF to print or send.
There's no licence or activation, so a read-only state in Office doesn't affect it. The file is processed in your browser and isn't uploaded, and your original .pub stays exactly as it was. If a file looks different from how it did in Publisher, see why a .pub file can look wrong.