Fix Microsoft Office Installation Error EC 30015-1015 (183)
Question details
The user is trying to install or reinstall Microsoft Office but encounters error code EC 30015-1015 (183) due to previous installation remnants, incorrect product keys, or mismatched account credentials.
- Product
- Microsoft Office
- Device & OS
- Windows 10
- Scenario
- Reinstalling Microsoft Office after a previous installation stopped functioning correctly.
- Observed behavior
- The installation process fails to complete, prompting error code EC 30015-1015 (183) and preventing the user from using Word, Excel, and PowerPoint.
Ensure you have saved all ongoing work and have your correct Microsoft account login details readily available before proceeding with the uninstallation and system restart.
Perform a Clean Reinstallation using the Recovery Assistant
Use the Microsoft Support and Recovery Assistant to fully remove corrupted Office files and clear old account credentials before attempting a fresh install.
Installation errors often occur because remnant files from previous Office versions conflict with the new installation. Removing these files and clearing related Windows credentials guarantees a clean slate.
Close all currently open Microsoft Office applications, sign out of your Office account, and reboot your computer to release any locked files.
Download and run the Microsoft Support and Recovery Assistant (SaRA) tool to completely uninstall all existing Microsoft Office software from your device.
Open the Windows Control Panel, navigate to 'User Accounts', and click on 'Credential Manager'. Under 'Windows Credentials', find and delete any stored credentials related to Microsoft Office.
Go to office.com/setup in your web browser, sign in with the Microsoft account originally used to redeem your Office license, and follow the prompts to download and install the software.
Avoid Installation Headaches with WPS Office
If you are tired of dealing with frustrating installation errors, complicated license keys, and corrupted files, WPS Office is the perfect alternative. It is a highly compatible, free Office suite that installs quickly and easily.
- 1. Download the installer: Visit the official WPS Office website and click on the 'Free Download' button.
- 2. Run the setup: Open the downloaded installer file and follow the quick, one-click installation process.
- 3. Start creating: Launch WPS Office and immediately begin working on your documents, spreadsheets, and presentations without needing to sign in.
Frequently Asked Questions
What causes Microsoft Office Error EC 30015-1015 (183)?
This error is typically caused by leftover files from a previous Office installation that failed to uninstall completely, corrupted system files, or conflicts with incorrect product keys stored in the Windows Credential Manager.
How do I access the Windows Credential Manager?
You can access it by clicking the Start menu, typing 'Control Panel', and pressing Enter. From there, navigate to 'User Accounts' and click on 'Credential Manager'. Select 'Windows Credentials' to view and manage your saved passwords.
Do I need to purchase a new product key if my installation fails?
No. As long as you have already linked a valid Office license to your Microsoft account, you can reinstall the software without a new key by logging into office.com/setup with that same account.
Why did my Office icons suddenly change and stop opening files?
This usually indicates that the Office installation files have become corrupted or that an update failed to apply properly. Running an online repair or performing a clean reinstallation using the Microsoft Support and Recovery Assistant will typically resolve this.
