What actually happens to Microsoft Publisher in October 2026

Two different things happen to Publisher this autumn, on two different dates, and almost nothing currently written about it separates them. Which one applies to you depends on how you licensed Publisher in the first place.

What happens to the files you already have

Nothing, and it's worth saying plainly because it's easy to assume otherwise. An old.pub file does not expire, corrupt, or become unreadable to Publisher on some future date. What changes is which programs on your computer can open it. After 1 October, Microsoft doesn't ship one — not even to the Microsoft 365 subscribers who paid for the suite that used to include it. That's a real problem, but it's a different and more fixable one than data loss: the file is intact, you just need something else able to open it.

Publisher never had a free viewer

Word, Excel and PowerPoint have always shipped a free viewer, so a machine without the full app could still open a colleague's .docx or .xlsx. Publisher never got one. Microsoft's own support page for it says so directly: "Publisher doesn't have a viewer for opening and viewing Publisher (.pub) files." (support.microsoft.com) There has never been a free, legitimate way to just look at a .pub file without owning Publisher. October doesn't create that problem — it just puts a lot more people in front of it at once.

What Microsoft recommends — and what it leaves out

Microsoft's own advice, from the same retirement page, is to "Convert your existing files to another format before 10/1/2026" — done inside Publisher itself, File > Save As > PDF, one file at a time. For a handful of files that costs nothing and is the right answer; see below. For an archive, it's advice that assumes free time most people writing in about this don't have, and it stops being possible the moment the deadline it warns about arrives.

It also leaves out anyone who wanted to keep editing these documents rather than just archive them. A moderator on Microsoft's own support forum confirmed there is no official bulk.pub-to-.docx converter (learn.microsoft.com, Feb 2026) — the only routes are converting by hand, one file at a time, or a script that produces PDFs, not anything editable. One person asked exactly this: how to turn "18 years of Publisher created newsletters & brochures" into something that could still be edited. (learn.microsoft.com, Apr 2026) There isn't a Microsoft answer for that archive. Going forward, Microsoft points people to Word — for envelopes, labels and newsletters — and PowerPoint, for banners, signs and posters. That's guidance for the next document you make, not the ones you already have.

What to do, by situation

• A handful of files, and Publisher is still installed. Do it yourself — it's free. Open each one, File > Save As, choose PDF. For a whole folder at once instead of one file at a time, Microsoft has a script for exactly that: see how to batch convert Publisher files for the exact command, what it needs, and where people report it going wrong.
• A real archive — dozens or hundreds of files. Doing it by hand doesn't scale, and Microsoft's own script has real requirements and real failure modes people have hit. Same link: how to batch convert Publisher files.
• No Publisher at all, on any machine. See how to open a .pub file without Publisher — the free option is usually just asking whoever made the file for a PDF.
• You're on a Mac (or a Chromebook). Microsoft's script drives an installed copy of Publisher rather than reading the file itself, and it has never run on anything but Windows. Same page as above covers what actually works.

If what you're looking at is a real archive with no Publisher left to run anything on, the converter on this site handles up to 200 files a batch, in a browser, Mac included — and hands back a report saying which files need a person to check them, instead of a pile of PDFs and a hope.