Office Error error-30015-11: Installation Error 30015-11
This error typically occurs when previous office version not fully removed before installing new version. Below you'll find 5 proven fixes to resolve it.
What Causes Office Error error-30015-11?
Office error error-30015-11 (Installation Error 30015-11) can be triggered by several issues:
- Previous Office version not fully removed before installing new version
- Corrupted Office installation files in the temp directory
- Insufficient disk space for installation
- Windows Installer service damaged or not running
- Conflicting registry entries from old Office versions
How to Fix Office Error error-30015-11 — Step by Step
Uninstall old Office completely
Download the Microsoft Office Uninstall Support Tool from aka.ms/SaRA-OfficeUninstallFromPC. Run it and select the old Office version to remove every trace before reinstalling.
Use Microsoft Support and Recovery Assistant
Download the Microsoft Support and Recovery Assistant (Sara) from aka.ms/SaRA-Download. Select Office > I cannot install Office > follow the guided repair steps. It automatically resolves most 30015-11 errors.
Run the Office installer as Administrator
Right-click the Office setup file or the Microsoft 365 installer > Run as administrator. Some installation steps require elevated privileges that standard users do not have.
Free up disk space
Office requires at least 4GB free. Open Settings > System > Storage > Temporary files > delete all. Also empty the Recycle Bin and delete old downloads.
Reset Windows Installer service
Open CMD as Admin:net stop msiservernet start msiserver
If that fails: msiexec /unregister then msiexec /regserver. Restart and retry installation.
Still Getting Error error-30015-11?
IT Cares can diagnose and fix this error remotely — usually in under 30 minutes.
Frequently Asked Questions
What is Office installation error 30015-11?
The Office installer failed mid-installation, usually because old Office files are blocking the new install or the Windows Installer service has a problem.
Can I have two versions of Office installed?
Generally no. Having Office 2016 and Microsoft 365 installed simultaneously causes conflicts. Always fully uninstall the old version first using the Microsoft removal tool.
How long does Office installation take?
On a fast internet connection, 15-30 minutes. On slower connections, up to 2 hours. The installation also needs to download several hundred megabytes of files.
Will I lose my Outlook emails if I reinstall Office?
No. Emails are stored in .pst files (locally) or on your mail server (Exchange/Microsoft 365). Reinstalling Office does not delete these files.
Why does Office keep failing at the same percentage?
The installer is stuck on a specific file — usually because antivirus is scanning it or the file is corrupted. Disable antivirus and clear the temp folder, then retry.
Comments
Have a question about error error-30015-11? Leave a comment below.
Leave a Comment