VBA & Macro Problems

How to Fix Excel Cannot Save Changes to XLA Add-Ins

Chanuka GeekiyanageChanuka Geekiyanage Oct 16, 2026 869 views

Question details

Users are unable to save VBA code modifications made to an Excel .xla add-in, despite the file being writable and in a trusted location.

How to Fix Excel Cannot Save Changes to XLA Add-Ins
Product
Microsoft Excel
Device & OS
not provided
Scenario
Editing and attempting to save VBA changes within an existing .xla add-in file.
Observed behavior
Excel fails to retain the VBA changes upon saving, discarding the edits made to the add-in.
Before you start

Ensure the .xla file is not marked as read-only in its Windows Properties and verify that it is stored in a designated Trusted Location in Excel's Trust Center.

Solution 1Recommended

Modify the IsAddin Property Before Saving

The most effective way to force Excel to save changes to an .xla file is to temporarily disable the Add-in status while editing.

1
Open the VBA Editor

Launch Excel and press ALT + F11 on your keyboard to open the Visual Basic for Applications (VBA) Editor.

2
Select the Add-in Workbook

In the Project Explorer pane on the left, locate and select the workbook corresponding to your .xla add-in.

3
Change the IsAddin Property

In the Properties window below the Project Explorer (press F4 if it is hidden), find the 'IsAddin' property and change its value to 'False'.

4
Save the VBA Changes

Make your necessary modifications to the VBA code. Click the Save icon or press CTRL + S to save the workbook.

5
Restore Add-in Status

Change the 'IsAddin' property back to 'True', then save the file again to ensure it remains in the correct add-in format.

Modify the IsAddin Property Before Saving
Backup Recommended: Always keep a backup copy of your original .xla file before modifying properties or VBA code.
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Frequently Asked Questions

Why does Excel revert changes made to my XLA file?

Excel sometimes fails to register VBA changes in add-in mode due to security restrictions or file status. Temporarily changing the workbook's 'IsAddin' property to False allows the changes to be written directly to the file.

How do I check if my add-in is blocked by security settings?

Right-click the .xla file in Windows File Explorer, select Properties, and look for a security warning at the bottom of the General tab. If present, check the 'Unblock' box and click Apply.

Can I use XLAM instead of XLA for Excel macros?

Yes, .xlam is the modern add-in format introduced in Excel 2007. It is based on the Open XML standard and is generally more stable and secure than the older binary .xla format.

What should I do if my organization manages my Office updates?

If you cannot run an Online Repair or update Office because your system is managed via the Microsoft Company Portal, you will need to contact your IT administrator to perform the repair or push the latest software updates.