Excel Error Codes

How to Fix Power Pivot COM Exception Error in Excel 2016

Chanuka Geekiyanage Oct 10, 2026 869 views

Question details

The user needs to resolve a Power Pivot Data Model COM exception error involving the Microsoft.AnalysisServices assembly in Excel 2016.

How to Fix Power Pivot COM Exception Error in Excel 2016

Product: Microsoft Excel 2016
Device & OS: not provided
Scenario: Attempting to open, create, or work with a Power Pivot Data Model in an Excel 2016 workbook.
Observed behavior: Excel triggers a COM exception related to the Microsoft.AnalysisServices back-end assembly, preventing the user from accessing or modifying the Data Model.

Before you start

Verify that you are running Excel 2016 with administrator privileges and ensure that all the latest Windows and Office updates have been fully installed on your system.

Solution 1Recommended

Repair Your Microsoft Office Installation

Use the built-in repair tool to fix damaged Power Pivot assemblies or corrupted Office files causing the COM exception.

A COM exception often points to missing or corrupted backend libraries like Microsoft.AnalysisServices. Running an Online Repair will reinstall these missing components without deleting your files.

Open Control Panel

Press the Windows key, type 'Control Panel' in the search bar, and press Enter to launch the application.

Navigate to Programs and Features

Change the view to 'Category' if needed, then click on 'Uninstall a program' under the Programs section.

Run Office Online Repair

Locate Microsoft Office 2016 in the installed programs list, right-click it, and select 'Change'. Select 'Online Repair' from the dialog box and click 'Repair' to begin the process.

Repair Your Microsoft Office Installation

Repair Time: Online Repair requires an active internet connection and may take several minutes to download and replace corrupted assembly files.

Solution 2

Match the File Creator's Excel Version

Data Model compatibility issues frequently occur if a file was created in a newer version of Excel or a different architecture.

Solution 3

Disable and Re-enable the Power Pivot Add-in

Restarting the Power Pivot COM Add-in can reset its background processes and clear temporary loading errors.

Free Microsoft Office alternative

Use WPS Office for Reliable Spreadsheet Management

If Microsoft Excel 2016 continues to experience complex COM exceptions and assembly errors, consider switching to WPS Office. It provides a lightweight, highly stable environment for handling all your standard data and spreadsheet needs without heavy background crashing.

1. Download the Installer: Visit the official WPS Office website and click the free download button.
2. Install WPS Office: Run the downloaded executable file and follow the rapid installation prompts.
3. Open Your Workbooks: Launch WPS Spreadsheets and directly open your existing .xlsx files to resume your work instantly.

Lightweight architecture that avoids complex COM add-in conflicts and assembly crashes.Fully compatible with Microsoft Excel formats (.xlsx, .xls, .csv) for seamless file migration.Free to use with a highly familiar user interface, requiring zero learning curve.Includes robust, built-in pivot tables and data analysis tools right out of the box.

Frequently Asked Questions

What causes a COM exception in Excel Power Pivot?

A COM exception in Power Pivot typically occurs when there is a mismatch, registry error, or corruption in the underlying Microsoft.AnalysisServices libraries. It can also happen if the file was created in a newer Excel version with unsupported Data Model features.

Does the bit-version of Office (32-bit vs 64-bit) affect Power Pivot?

Yes. Power Pivot data models are highly memory-intensive. Using the 32-bit version of Office restricts Excel to a 2GB memory limit, which can easily cause COM exceptions when handling large data sets. Moving to 64-bit Office is recommended for extensive Data Model usage.

Can I manually reinstall just the Power Pivot add-in?

In Excel 2016 and newer, Power Pivot is integrated directly into the core Office installation. You cannot download it as a standalone add-in anymore; you must run an Online Repair or fully reinstall Microsoft Office to fix integrated add-in files.