“Can’t Verify The Signature” Installation Error in Office 365/2021/2019

To fix the installation error “Can’t verify the signature, use the following methods. We will assist or give live support for all versions of Windows and Microsoft 365. This Error “we’re sorry but we can’t verify the signature of files required to install your office product” applies for all versions of windows like Windows 11, and Windows 10.

We Should verify these signatures to keep our computer safe. This can be done by installing a latest product and if the Office installation fail and pop up with an error try to download office product again. Similarly, make sure that the downloaded office 365/2021 product is from the trusted source. 


Can't Verify the Signature

Reasons for getting the error “Can’t Verify The Signature”

The user is not able to verify the signature in Microsoft office 365. If they are using a device that doesn’t have the hardware compatibility for the office applications. The user should upgrade the device with operating system to verify the signature issues in Microsoft Office 365/2021.

This “Can’t Verify The Signature” error is caused due to the installation of Microsoft Office 365. The user might have installed the software without updating it or without verifying the signature. This issue is resolved by cleaning all the temporary Internet files in the system. Delete these from the system and then download Microsoft Office and check the Microsoft 365 updates. 


Can't Verify the Signature

How User can verify his/her signature?

  1. First, open Microsoft 365 and click on settings

  2. Can’t Verify The Signature
  3. Next, click on account settings and then choose security info
  4. Finally, follow the instructions on screen to verify your signature

If you are unable to verify your signature, this is likely due to an issue with the Microsoft Office 365 installation.

  1. First, make sure that you have installed the latest version of Office 365/2021
  2. Similarly, if you are still unable to verify your signature, please contact our support team for further assistance

Alternative methods to install office 365/2021/2019

If you are using a wireless connection, connect your computer through a network cable. This will speed up the download and installation process of office 365/2021.

How to repair Office 365/2021 in Windows 10?

There are two ways to repair Microsoft Office 365, Quick Repair and Online Repair. In Quick Repair, issues are quickly fixed without the Internet connectivity but whereas in Online Repair, issues are fixed a little later and Internet connection is Required. Consequently, to repair Microsoft Office 365/2021/2019 using the Quick Repair tool, follow these steps

  1. Firstly, press the Windows logo key + X to see a list of commands and options. (Basically a quick way to get to Programs and Features in Control Panel)
  2. Then select “Programs and Features
  3. Click the Office program you want to repair, and then select Change button
  4. Choose quick repair or online repair options to finish the repair process
  5. Finally, restart your computer after the repair is complete


Can’t Verify The Signature

Other Errors while installing Office 365

Here if you face a direct issue with outlook, we should make a repair or reinstall with the above steps. Let us see how we can fix an Outlook error! A recent issue faced with outlook is Operational error.

We will make you understand how to fix them and you can also seek email support services from here.  You can also chat with our experts here, I am sure they will provide you the perfection solutions to resolve your issue completely. You can also visit our website for more details and information.

Can't Verify The Signature