Excel 2016 Copy/Paste Still Failing After KB5002665

Question

Excel 2016 Copy/Paste Still Failing After KB5002665

Muhammed Irfan 20

After installing KB5002914, we experienced the known Excel 2016 issue where paste operations fail silently (Ctrl+C works, Ctrl+V does nothing, no error message). We have since installed KB5002665, which Microsoft states fixes this issue.

Environment

Excel 2016 MSI
Version: 16.0.5574.1004 (MSO 16.0.5569.1003) 64-bit
KB5002665 installed

Current behavior

Issue persists on some legacy workbooks.
Ctrl+C shows the moving border.
Ctrl+V does nothing.
Paste Values / Paste All may work.
New workbooks appear unaffected.
Running Open and Repair → Extract Data → Recover Formulas improves or resolves the issue for affected files.

Has anyone seen workbook-specific copy/paste failures after installing KB5002665? Could KB5002914 have exposed pre-existing workbook corruption, or is there a known residual issue with certain workbook structures (conditional formatting, styles, named ranges, etc.)?After installing KB5002914, we experienced the known Excel 2016 issue where paste operations fail silently (Ctrl+C works, Ctrl+V does nothing, no error message). We have since installed KB5002665, which Microsoft states fixes this issue.

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Answer 1

Hello Muhammed Irfan,

Thank you for the detailed testing.

Since you have already tried the latest KB5002665 revision and the suggested workbook-level checks, there is one newer update worth checking.

Please open Control Panel > Programs > Programs and Features > View installed updates and look for KB5002934. Similar copy-and-paste failures have been reported after this October 2026 Excel 2016 security update.

If KB5002934 is installed, you may temporarily uninstall it, restart the computer, and test an affected workbook again. Before doing so, save a backup of your files.

Please note that KB5002934 is a security update. Removing it should only be used as a short diagnostic test, not as a permanent solution. If copy and paste works again after its removal, submit the result through Excel > File > Feedback > Report a Problem.

You can also contact Microsoft Support and provide your Excel version, the installed update numbers, and the results of this test for more insight. Here how to reach out to support:

Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas.

Open a website link - Contact - Microsoft Support
In the box below "We're here to help", type Microsoft 365, click "Get Help", and then click "Contact Support" below.
In this section, you will need to sign in to your Microsoft account.
Select "Microsoft 365 and Office" under Products & Services, select "Technical Support" as the category, and click to confirm
You can select " Chat with a support agent in your web browser " to access the chat window.

Please let us know whether KB5002934 is installed and whether temporarily removing it changes the behavior.

Have a nice day.

Xavier-D 14,265 Reputation points Microsoft External Staff Moderator

2026-10-23T23:39:21.9366667+00:00

Hi Muhammed Irfan

I’m following up to check on the status of this issue.

Have you had an opportunity to review the answer shared earlier?

Any update you can provide would be greatly appreciated.
Muhammed Irfan 20 Reputation points

2026-10-25T06:07:42.72+00:00

Thank you for your support.

I confirmed that KB5002934 was installed. After uninstalling the update for Excel and restarting the computer, the copy/paste issue was resolved. Excel is now working normally.

Thanks again for your assistance.
Xavier-D 14,265 Reputation points Microsoft External Staff Moderator

2026-10-27T01:27:47.66+00:00

Hi Muhammed Irfan

I'm glad to hear that the issue has been resolved

have a nice day