Microsoft Offices 365 Excel opens to a blank file

This might be caused by Excel starting with a corrupted workbook view, a broken startup setting, disabled rendering, or a damaged default template/workbook environment.

Start by opening Excel alone, not by opening a spreadsheet. If you get a blank gray or white window, go to the View tab and click “Unhide.” If there is an entry in the dialog, select it and click OK.

Next, test Safe Mode. Press Windows+R, type:

excel /safe

and press Enter. Then try opening one of your spreadsheets. If it works normally in Safe Mode, the problem is almost certainly an add-in or graphics rendering issue.

In normal Excel, go to File → Options → Add-ins. At the bottom, where it says “Manage,” select COM Add-ins and click Go. Disable all add-ins temporarily, restart Excel normally, and test again.

Then disable hardware graphics acceleration. Go to File → Options → Advanced → Display and check “Disable hardware graphics acceleration.” Restart Excel afterward. Blank workbook windows in Microsoft 365 are very commonly tied to GPU rendering.

Since you mentioned the default template, check the Microsoft 365 startup folder. Close Excel completely and open:

C:\Users\YOURNAME\AppData\Roaming\Microsoft\Excel\XLSTART

Look for files such as:

PERSONAL.XLSB Book.xltx Sheet.xltx

Move them somewhere else temporarily and restart Excel. If one of those files is corrupted, Excel can launch with an empty or unusable interface.

Also check this setting because it specifically causes blank windows when opening files from Explorer:

File → Options → Advanced → General

Make sure “Ignore other applications that use Dynamic Data Exchange (DDE)” is unchecked.

If the issue continues, run the Microsoft 365 repair process:

Settings → Apps → Installed Apps → Microsoft 365 → Modify

Start with “Quick Repair.” If that fails, use “Online Repair.” Online Repair is more thorough and often fixes broken Excel startup behavior or damaged Office components.

You can also try disabling the Start Screen. Go to File → Options → General and uncheck “Show the Start screen when this application starts.” Occasionally the startup UI itself glitches and leaves users with what looks like a blank Excel window.

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hth

Marcin