How to Fix Excel Startup Errors Caused by Missing Add-ins or Files
Question details
The user experiences recurring startup errors in Excel because the program is attempting to load a missing or deleted add-in, XLAM, XLA, or DLL file.

- Product
- Microsoft Excel
- Device & OS
- not provided
- Scenario
- Launching Excel for regular spreadsheet work.
- Observed behavior
- Excel repeatedly displays startup errors indicating it cannot find a specific file path or add-in when opening.
Write down or take a screenshot of the exact file path and filename (such as a .xlam or .dll file) shown in the startup error message before proceeding.
Disable the Missing Add-in from Excel Options
Identify and disable the invalid add-in reference from Excel's options to prevent it from loading at startup.
When an add-in file is deleted from your computer without being disabled in Excel first, Excel will continue searching for it during startup. Removing the reference from the Add-ins menu will clear the error.
Launch Excel, close or ignore the startup error, and click on 'File' in the top-left corner, then select 'Options' at the bottom of the menu.
Select 'Add-ins' from the left sidebar of the Excel Options window.
At the bottom of the window, set the 'Manage' dropdown to 'Excel Add-ins' or 'COM Add-ins' (depending on the missing file type) and click the 'Go' button.
Locate the missing add-in in the list, uncheck the box next to it, and click 'OK'.

Clear the Excel Startup Folder (XLSTART)
Remove orphaned or corrupted files from Excel's startup folder that trigger errors upon launch.
Troubleshoot Missing DLL Files
Address DLL-related startup errors by identifying the associated software rather than downloading unsafe third-party replacements.
Switch to WPS Office to Avoid Clunky Excel Add-in Errors
Tired of dealing with missing file errors and slow startup times in Microsoft Excel? WPS Office provides a lightweight, highly compatible, and free alternative. It seamlessly supports Microsoft Excel formats without the bloated add-in dependencies, ensuring a smooth startup every time.
- 1. Download WPS Office: Visit the official WPS website and download the free installer for your operating system.
- 2. Install the Software: Run the setup file and follow the on-screen instructions for a quick, lightweight installation.
- 3. Open Your Spreadsheets: Launch WPS Spreadsheet and instantly open your existing .xlsx or .csv files with zero compatibility issues.

Frequently Asked Questions
Why does Excel keep looking for a deleted file at startup?
Excel stores a list of active add-ins in its registry and settings. If you delete an add-in file directly from your computer's hard drive without first disabling it within the Excel Options menu, the program will still attempt to load it on startup, resulting in an error.
Can I just download the missing DLL file from a website?
It is highly recommended not to download individual DLL files from third-party sites, as they may contain malware or be incompatible with your system's architecture. Instead, reinstall the specific add-in or software that requires the DLL to restore it safely.
What is the difference between an .xla and an .xlam file?
Both are Excel Add-in files, but .xla is the legacy format used in Excel 97-2003, while .xlam is the newer, XML-based macro-enabled add-in format used in Excel 2007 and later versions.
How do I find out which add-in is causing the problem?
The startup error message usually displays the full file path. By checking the folder names within that path, you can typically identify the name of the software, company, or add-in responsible for the missing file.




