Die Miniaturansicht in der Excel-Taskleiste verschwindet sofort, wenn mehrere Excel-Fenster geöffnet sind.

Question

Die Miniaturansicht in der Excel-Taskleiste verschwindet sofort, wenn mehrere Excel-Fenster geöffnet sind.

Diego Marchetti 0

When I have multiple Microsoft Excel windows/workbooks open and try to switch between them using the Excel icon on the Windows taskbar, the taskbar thumbnail preview appears only briefly and then immediately disappears.

Because of this, I cannot select the Excel window/workbook that I want to bring to the foreground.

Steps to reproduce:

Open multiple Excel workbooks/windows.

Work normally in Excel.

Click or hover over the Excel icon in the Windows taskbar to display the open Excel windows.

The thumbnail preview appears.

Almost immediately, the preview closes/disappears before I can select one of the Excel windows.

Interesting workaround / additional observation:

When the problem occurs, if I press the Esc key several times and then click the Excel taskbar icon again, the thumbnail preview remains visible and I can select the desired Excel window normally.

This suggests that there may be a focus issue, an invisible/hidden dialog, or another interaction between Excel and the Windows taskbar/window manager.

The problem makes working with several Excel windows particularly difficult because switching between workbooks using the Windows taskbar becomes unreliable.

Expected behavior:

When clicking or hovering over the Excel taskbar icon, the thumbnail previews of all open Excel windows should remain visible until I select a window or click somewhere else.

Actual behavior:

The preview opens and immediately closes, preventing window selection.

Please investigate whether Excel is incorrectly taking back the focus, whether an invisible Excel window/dialog is receiving focus, or whether there is an interaction problem between Excel and the Windows taskbar thumbnail preview.

I can provide additional information such as Windows version/build, Microsoft 365/Excel version, installed Excel add-ins, display configuration, and a screen recording if required.

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Answer 1

This is a German-language forum; however, since you've asked your question in English, please allow me to respond in English as well.
Hi @Diego Marchetti,

Thank you for the detailed description. To help narrow down the cause, I would like to gather a bit more information about your environment and whether the behavior is related to Excel, Windows, or a specific workbook configuration.

Could you please confirm:

Which version of Windows are you using (Windows 10 or Windows 11), and what is the OS build number?
Which version of Microsoft Excel are you running? You can check this via File > Account > About Excel.
⁠Does the same behavior occur with other Office applications when multiple windows are open (for example, Word, Outlook, or PowerPoint), or is it only happening with Excel?
Have you already checked for and installed the latest updates for both Windows and Microsoft Excel? If so, could you confirm the Windows build number and Excel version currently installed?
If you sign in to Microsoft 365 and test Excel on a different device, does the same behavior occur there, or is it limited to this specific computer?

In the meantime please try repair Office

Right-click the Start button (lower-left corner) and select Installed apps on the pop-up menu. User's image

Select the Microsoft 365 or Office product you want to repair, click the ellipses, and select Modify. User's image

If you see a notification that say " allow the change on your device" click yes. Then select online repair  User's image

Thank you again for your time and understanding. I really appreciate your patience, and I’m here to help. Looking forward to your response.

Answer 2

Diego Marchetti 0

My installations is a Windows 11 Enterprise edition 25H2 - 26200.9168 installed on a Dell Pro 16 Plus PB16250, Office 365 Business. An installation o a repai on a businees enviroment is not applicable. Thanks in advance

Heimerdinger 630 Zuverlässigkeitspunkte Unabhängiger Berater

2026-09-30T14:44:09.95+00:00

Hi @Diego Marchetti,

Thank you for providing those details.

Since this device is running Windows 11 Enterprise in a business-managed environment and an Office repair is not an option, I would recommend involving your organization's IT administrator or endpoint management team.

Your IT team can review the device configuration, installed security and management tools, recent updates, and system logs to determine whether something is interfering with window focus or taskbar previews.

It may also be helpful for them to check whether the issue can be reproduced using a different Windows user profile or on another managed device with a similar configuration.

Thank you, and I look forward to your update.

Answer 3

Thomas L 160.1K Volunteer Moderator

Hallo Diego,

vielen Dank für deine Anfrage.

In deutschsprachigen Forum sollten Anfragen in deutscher Spache eingestellt werden.

Ich kann das Verhalten hier nicht nachstellen, hier tritt der Fehler nicht auf.

Besteht der Fehler auch nach einer Neuinstallation weiter?

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