Fix access to Microsoft Publisher

Check Publisher → File → Account and your Microsoft account’s Services & subscriptions page first, because Publisher from Microsoft 365 has been retired, while Publisher 2021/2019/2016 may still be reactivated with its perpetual license.

If Publisher came with Microsoft 365

Publisher reached end of life in October 2026 and is no longer available to Microsoft 365 subscribers as the removal update rolls out. Microsoft 365 Publisher therefore cannot be reactivated after removal, although Word and other included applications may remain licensed. Perpetual versions are treated differently. ^1^

To identify this case:

1. Open Publisher → File → Account and note the product name.
2. Sign in to Services & subscriptions using the Microsoft account that purchased Office.
3. If it shows Microsoft 365 rather than Publisher 2021/2019/2016, check Word or Excel:
   • Only Publisher is unlicensed: this is consistent with Publisher’s retirement. There is no supported way to restore the Microsoft 365 edition.
   • Word or Excel is also unlicensed: treat this as a general Microsoft 365 activation problem instead of Publisher retirement.

If Publisher still lets you open the book, preserve it immediately:

• For a printable copy: File → Save As → PDF → Save.
• For future editing: save as PDF, open that PDF in Word through File → Open, and accept the conversion prompt. Complex layouts and graphics may change, so compare the converted document with the PDF. ^1^

If all Microsoft 365 applications are unlicensed

1. On Services & subscriptions, verify that the subscription is active and belongs to the account signed into Office.
2. If expired, renew it and restart the Office applications.
3. If active, open Publisher or Word and use File → Account → Sign in, choosing the account that owns the subscription.
4. On Windows 10 or 11, run Microsoft’s Microsoft 365 activation troubleshooter from the activation-support page on the affected PC.
5. Check for conflicting installations:
   • Open Control Panel → Programs → Programs and Features.
   • Search for Office.
   • If multiple Office versions appear, uninstall the one you do not use, restart Windows, and sign in again.

Microsoft documents that an expired subscription, the wrong account, or multiple Office installations can leave applications in reduced-functionality mode and prevent editing. ^2^

If you own Publisher 2021, 2019, or 2016

A perpetual Publisher license can continue to run after support ends. ^1^

1. In Publisher → File → Account, sign in with the account used to buy or redeem that copy.
2. If the product key has never been redeemed, redeem it at Office.com/setup; this associates the product with your Microsoft account. ^3^
3. Remove any duplicate Office installation using Control Panel → Programs → Programs and Features, then restart.
4. If activation still fails, run an Online Repair:
   • Open Settings → Apps → Installed apps.
   • Select Microsoft Office, choose Modify, and then Online Repair.
5. Continue with the version-specific Office 2021, 2019 and Office 2016 activation path on Microsoft’s activation page—not the Microsoft 365 activation troubleshooter. If it remains unlicensed, use the Contact Support option there. ^2^

References

1. Microsoft Publisher will no longer be supported after October 2026 | Microsoft Support
2. Unlicensed Product and activation errors in Office | Microsoft Support
3. Activate Office for Windows | Microsoft Support