Monday, September 21, 2026

Microsoft office broken copy-and-paste functionality in multiple versions of Excel

 Microsoft office broken copy-and-paste functionality in multiple versions of Excel


A recent Microsoft security update (KB5002914) released in September 2026 has broken the copy-and-paste functionality in multiple versions of Excel, including Excel 2016, 2019, 2021, 2024, and Microsoft 365. When you try to copy and paste, the operation fails "silently"—the source data stays selected, but nothing happens at the destination, and no error message appears.
Microsoft has begun rolling out partial fixes, but if you are still stuck, you can use the official workarounds and system fixes detailed below to restore your clipboard functionality.

1. Temporary Workarounds (Quickest Fixes)

If you need to get work done immediately without modifying your system settings, use these methods:

·         Use the Cut-and-Undo Trick: Select your data, press Ctrl + X (Cut), immediately press Ctrl + Z (Undo) to return the data to its place, and then navigate to your destination cell and press Ctrl + V (Paste).

·         Use Paste Special: Instead of a standard paste, copy your cells, right-click the destination cell, and choose Paste Special (or press Ctrl + Alt + V). Select Formulas or Values to paste the contents. Note: If your sheet uses conditional formatting, standard pasting may still fail, making Paste Special your best alternative.

2. Install the Official Microsoft Fix (Excel 2016 MSI Users)

Microsoft released an official patch (KB5002665) specifically to fix this regression.

1.    Open your Windows Settings > Update & Security > Windows Update.

2.    Click Check for updates and look for KB5002665.

3.    Install the update and restart your computer.

3. Roll Back the Buggy Update (Excel 2019 / 2021 / 2024 / 365)

If you are on a newer version of Office (Click-to-Run) where the automatic patch isn't fully active yet, you can manually roll back your Office version to a stable August 2026 build.

1.    Click the Windows Start menu, type cmd, right-click on Command Prompt, and select Run as administrator.

2.    Copy and paste the specific command for your version below into the Command Prompt window, then press Enter:

 

o    For Office 2019:

text

"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.10417.20197

Use code with caution.

 

o    For Office 2021 / 2024 / 365:

text

"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.20326.20132

Use code with caution.

3.      Allow the Microsoft Click-to-Run installer UI to finish rolling back the system, then restart your PC

4. General Troubleshooting (If the update isn't the cause)

If your issue started before September 2026 or is isolated to a single file, try these standard steps:

·         Clear the Excel Clipboard: Go to the Home tab, click the tiny arrow dialog launcher in the bottom right corner of the Clipboard group, and click Clear All.


·         Disable Add-ins: Go to File > Options > Add-ins. Change the dropdown at the bottom to COM Add-ins, click Go, and uncheck active plugins to see if a third-party app (like Bloomberg Terminal or browser extensions) is locking the clipboard.


·         Unmerge Cells: Excel cannot paste data if the target destination contains merged cells that don't exactly match the size of the copied data. Select your target area and click Merge & Center to unmerge them.

Which Excel Version (e.g., Office 365, Excel 2021, Excel 2016) are you currently using?


Thanks for Reading...

Masud Rana

Microsoft office broken copy-and-paste functionality in multiple versions of Excel

 Microsoft office broken copy-and-paste functionality in multiple versions of Excel A recent Microsoft security update (KB5002914) released...