Installation Error Code 0x15 in Microsoft Office 365/2021/2019

Error Code 0x15 typically occurs when there are conflicts or issues with Microsoft Office components. This error can manifest itself in different ways, such as freezing or crashing of Office applications, unexpected error messages, or the inability to access certain features within Office.

Error Code 0x15

Possible Causes for this Microsoft Office Error 0x15:

Corrupted Office installation:

If the installation files of Office become corrupted or incomplete, it can lead to Error 0x15.

Conflicting add-ins:

Certain add-ins or plugins installed in Office can conflict with the application.

Outdated Office version:

Using an outdated version of Office may result in compatibility issues.

Malware or virus infections:

Malicious software can interfere with Office files, causing like Error Code 0x15.

Registry issues:

Problems in the Windows registry, such as invalid entries or missing keys, can impact Office functionality and lead to this error.

Easy steps to Fix this Error 0x15 in Office:

Repair Office Installation:

a. Open the Control Panel on your computer.
b. Navigate to “Programs” and click on “Uninstall a program” or “Add or Remove Programs.”
c. Locate Microsoft Office from the list of installed programs, right-click on it, and choose “Repair.”
d. Follow the on-screen instructions to complete the repair process.

Disable Conflicting Add-ins:

a.Launch any Office application (e.g., Word, Excel).
b. Click on “File” and select “Options.”
c. In the Options window, choose “Add-Ins” from the left-hand menu.
d. At the bottom of the window, next to “Manage,” select “COM Add-ins” and click on “Go.”
e. Deselect any add-ins that are enabled and click “OK.”

Update Office:

Open any Office application.
b. Click on “File” and select “Account.”
c. Under “Product Information,” click on “Update Options” and select “Update Now.”
d. Allow the update process to complete, and then restart your computer.

Scan for Malware:

a. Use a reliable antivirus or anti-malware software to scan your computer for any infections.
b. Follow the software’s instructions to remove any detected threats.
c. Restart your computer after the scan is complete.

Repair Windows Registry:

Note: Modifying the Windows registry should be done with caution. It is recommended to create a backup of your registry or seek assistance from a professional if you’re unsure.

Press the Windows key + R, type “regedit,” and hit Enter to open the Registry Editor.
b. Navigate to the following path: HKEY_CURRENT_USER\Software\Microsoft\Office
c. Right-click on the “Office” folder and select “Export” to create a backup.
d. After creating the backup, you can try deleting the “Office” folder.
e. Restart your computer.


Error Code 0x15 in Office can disrupt your productivity, but armed with the right knowledge, you can tackle it head-on. This article has provided you with an overview of the causes Understanding and Resolving Error 800f020b. If the problem persists, don’t hesitate to reach out to Microsoft support for further assistance.


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