Microsoft Office Error Code 30015-11 (2147942405) | Unable to Install Office 365 on my Personal Device

AGAM PANDEY 20 Reputation points
2026-02-22T18:25:37.0333333+00:00

Hi folks,

As the title says, I appear to be running into error code 30015-11 (2147942405) whenever I attempt to install office on my PC. I have tried the following troubleshooting steps:

Turned off all firewalls / antivirus on my PC

Used Revo Uninstaller to remove all trace of Office 365 before attempting to re-install

Used Microsoft Support and Recovery Assistant to uninstall / reinstall Office 365

Created a new user to test if it was an issue with my account

I also tried contacting office customer support a few days ago - they also could not figure out the issue. They said they would call me back but they haven't, and I'm hesitant to reach out to them because they haven't suggested anything I haven't already tried.

One thing to note: I cant afford to install new windows or anything which requires a large amount of internet..

Appreciate any and all help the community can provide on this issue. Thanks!

Microsoft 365 and Office | Install, redeem, activate | For home | Windows

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  1. Stefan Blom 357.2K Reputation points MVP Volunteer Moderator
    2026-02-22T19:36:33.1566667+00:00

    Did you also try the Windows System File Checker (before attempting to reinstall Office)?

    I suggested that elsewhere before I realized that the current thread is actually a continuation of an older thread (now locked).

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