Error code 30045-27

Question

I am trying to update my micrsoft 365 just keep getting error code 30045-27

Best Regards

Jan

Answer 1

Hi jan Lindstrom,

Error 30045‑27 typically indicates that the Microsoft 365 update process did not complete successfully. This can happen if the Click‑to‑Run service is stuck, the Office installation is partially damaged, or something on the PC or network (such as antivirus, firewall, VPN, or a restricted connection) is interfering with the update.

Please try the steps below in order:

1. Restart the PC, then try the update again from any Office app: File > Account > Update Options > Update Now.
2. If it still fails, temporarily test on a different network if possible. You can also briefly disable antivirus, VPN, or firewall filtering to check whether security software is blocking the update.
3. Go to Settings > Apps > Installed apps > Microsoft 365 > Modify, then run Quick Repair.
4. If Quick Repair doesn’t help, run Online Repair from the same menu. This is a more complete repair (similar to a reinstall‑in‑place) and often resolves stubborn 30045‑27 errors.
5. If the issue continues, use Microsoft’s official Office uninstall troubleshooter, restart the PC, and then reinstall Microsoft 365.

Notes:

• You may need local administrator rights to run Modify/Repair.
• Online Repair may sign you out of Office apps, so make sure you know the Microsoft account used for your subscription.
• If Office was installed from the Microsoft Store, updates are handled through the Store app rather than Update Options inside Office.

If the error still occurs after these steps, please reply with:

• Whether this is Microsoft 365 Personal or Family
• Whether Office was installed via the Microsoft Store or Click‑to‑Run
• Whether the error happens on all networks or only one

That information will help narrow down the next steps.

Please let me know if this proves useful to you, or if you would like further assistance.

I'm looking forward to your reply.

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Answer 2

Error code 30045-27 is not described in the provided material, but there is guidance for similar Office update errors that can be applied.

Try these steps in order:

1. Restart Windows and update Office
   1. Save work and close all apps.
   2. Restart the computer (not just sign out).
   3. Open Word (or another Office app).
   4. Go to File > Account (or Office Account in Outlook).
   5. Under Product Information, select Update Options > Update Now.
2. Restart the Click-to-Run service
   1. Close all Office applications.
   2. Open Command Prompt as Administrator (right-click Command Prompt > Run as administrator).
   3. Run this command:

            net stop clicktorunsvc & net start clicktorunsvc
      

   4. Open Word again and go to File > Account > Update Options > Update Now.
3. Check the internet connection
   1. If using Wi‑Fi, switch to a wired connection if possible.
   2. After connecting via cable, repeat the update steps: open an Office app, then File > Account > Update Options > Update Now.

If the error persists after these steps, perform an Online Repair of Office or reinstall Office from the Microsoft account portal, as suggested in similar Office error resolutions.

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References:

• Error code 30094-27 when updating Office
• Error code 30180-28 when updating Office
• I get a "Couldn't Update License" error in Microsoft 365
• I am getting license validation errors with Copilot
• Unable to log into m365.cloud.microsoft, something went wrong - Microsoft Q&A
• How can I get office 365 to work? - Microsoft Q&A
• My Microsoft365 Office Package no longer works with my iPad Pro - Microsoft Q&A
• Microsoft Office apps for Mac quit unexpectedly - Microsoft Q&A
• we are sorry, but word has run into an error that is preventing it from working correctly. Word will need to be closed as a result. Would you like us to repair now? - Microsoft Q&A