Security Policy Errors

How to Stop Repeated Excel Security Notification Pop-Ups

Chanuka Geekiyanage Oct 12, 2026 870 views

Question details

The user wants to disable frequent and repetitive security notifications in Excel that appear even when copying blank cells between workbooks.

How to Stop Repeated Excel Security Notification Pop-Ups in Excel

Product: Microsoft 365 Excel (Version 2311)
Device & OS: not provided
Scenario: Copying and pasting data between different workbooks.
Observed behavior: Excel continuously displays security notification pop-ups during simple copy-paste actions, interrupting the user's workflow.

Before you start

Before adjusting your security settings, ensure that the workbooks you are copying from are from a trusted source, as disabling these notifications can leave your device vulnerable to malicious macros or links.

Solution 1Recommended

Adjust Trust Center and Message Bar Settings

Modifying your Message Bar and Protected View preferences can prevent Excel from blocking content and showing repeated alerts.

Access Excel Options

Open Microsoft Excel, click on the "File" tab in the top-left corner, and then select "Options" at the bottom of the navigation pane.

Open Trust Center Settings

Navigate to "Trust Center" in the left pane of the Options window and click the "Trust Center Settings..." button.

Disable Message Bar Alerts

Select "Message Bar" from the left menu and choose the option "Never show information about blocked content".

Add Trusted Locations

Go to the "Trusted Locations" tab and click "Add new location..." to include the specific folders containing your safe workbooks, preventing warnings for those files entirely.

Adjust Trust Center and Message Bar Settings

Security Warning: Choosing to never show information about blocked content disables security alerts for all files, which may increase vulnerability to harmful scripts if you open untrusted files.

Solution 2

Reset Excel Settings via Registry Editor

If the pop-ups persist despite Trust Center changes, resetting the Excel settings folder in the Windows Registry can clear corrupted configurations causing the bug.

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Frequently Asked Questions

Why does Excel show a security notification when pasting a blank cell?

This is often caused by a known bug in specific Excel builds (such as Microsoft 365 version 2311) where background clipboard monitoring triggers false-positive security flags, even for blank data being transferred between workbooks.

What is a Trusted Location in Excel?

A Trusted Location is a specific folder on your computer or network where you can save files that you know are strictly safe. Excel bypasses standard security checks and Protected View restrictions for any files opened from these designated directories.

How do I re-enable security alerts if I disabled them?

You can re-enable alerts by going to File > Options > Trust Center > Trust Center Settings > Message Bar, and selecting "Show the Message Bar in all applications when active content, such as ActiveX controls and macros, has been blocked."

Will deleting the Excel registry folder delete my spreadsheets?

No. Deleting the Excel settings folder in the Registry Editor only resets application preferences, custom ribbon layouts, and configurations. Your saved .xlsx workbook files remain completely unaffected and safe.

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