[Fix] "The timestamp signature and/or certificate could not be verified or is malformed" error in Windows

Issue: Hello. I tried to install .NET Framework on my Windows laptop but I received the “The timestamp signature and/or certificate could not be verified or is malformed” error. How do I fix this?

Solved Answer

The “The timestamp signature and/or certificate could not be verified or is malformed” error is an issue that can occur when installing certain applications on Windows, such as DotNetFramework or LogMeIn Go to Assist. This error is typically caused by an outdated Windows system or restrictions from the Execution Policy[1] of the system.

This error can impact users by preventing them from installing the necessary application, which can prevent them from using certain features or programs that depend on that application. Possible solutions include updating the Windows system, disabling the Execution Policy, and disabling third-party antivirus software temporarily during the installation.

Additionally, checking the date and time on the computer and ensuring they are set correctly can also help resolve this issue. In this guide, you will find 5 steps that should help you fix “The timestamp signature and/or certificate could not be verified or is malformed” error in Windows.

Keep in mind that the manual troubleshooting process can be lengthy. To avoid this, you can use an automatic maintenance tool like FortectMac Washing Machine X9 that can fix most system errors, BSODs,[2] corrupted files, and registry[3] issues. Otherwise, follow the step-by-step instructions below.

The timestamp signature andor certificate could not be verified or is malformed

Solution 1. Fix Corrupted System Files

Use Command Prompt commands to repair system file corruption:

  • Open Command Prompt as administrator
  • Use the following command and press Enter:
    sfc /scannow

Fix Corrupted System Files

  • Reboot your system
  • If SFC returned an error, then use the following command lines, pressing Enter after each:
    DISM /Online /Cleanup-Image /CheckHealth
    DISM /Online /Cleanup-Image /ScanHealth
    DISM /Online /Cleanup-Image /RestoreHealth

Solution 2. Update Windows

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To repair damaged system, you have to purchase the licensed version of Fortect Mac Washing Machine X9.
  • Click Start and select Settings
  • Go to the Windows Update section
  • Click Check for updates and wait

Update Windows

  • Go to the Advanced options and install optional updates
  • Reboot your system

Solution 3. Install the latest .NET framework version

Install the latest NET framework version

  • Click on the latest and recommended .NET Framework
  • Click on the Download .NET Framework Runtime and let the download complete
  • Once the download is complete, launch the .NET Framework installer as administrator
  • Check if the installer successfully installs without encountering the certificate verification issue

Solution 4. Disable Code Signing of the Driver Package

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To repair damaged system, you have to purchase the licensed version of Fortect Mac Washing Machine X9.

Code Signing of the Driver Package in the Group Policy is a security feature that ensures that the drivers installed on a Windows system are from a trusted source and have not been tampered with. It is used to verify the authenticity of the driver and its publisher before it is installed on the system.

However, in some cases, the Code Signing of the Driver Package feature may cause issues during the installation of an application, resulting in the “The timestamp signature and/or certificate could not be verified or is malformed” error. Disabling Code Signing of the Driver Package can help to fix this issue.

To disable Code Signing of the Driver Package in Windows 11, you can follow the instructions provided in an in-depth guide How to disable Driver Signature Enforcement in Windows 11?. This guide will provide detailed instructions on how to perform this process, including screenshots and step-by-step instructions.

Solution 5. Perform an Upgrade Install

If previous solutions have not resolved the issue, you can use a Windows ISO to perform an in-place upgrade. To do so, download the necessary tool from the Microsoft website. Before proceeding, temporarily disable or uninstall any third-party antivirus software and disconnect any unnecessary peripherals (excluding the mouse and keyboard).

  • Visit the official Microsoft website and download the Windows installation media
  • Double-click the installer and select Yes when UAC shows up

Perform an Upgrade Install

  • Agree to the terms and click Next
  • Select Upgrade this PC now and select Next
  • Windows will now download all the necessary files – it might take sometime
  • Agree to terms once again and click Next
  • Before installing, make sure that you are happy with your choices (otherwise, you can click Change what to keep option)
  • Click Install to begin the upgrade process.

Repair your Errors automatically

ugetfix.com team is trying to do its best to help users find the best solutions for eliminating their errors. If you don't want to struggle with manual repair techniques, please use the automatic software. All recommended products have been tested and approved by our professionals. Tools that you can use to fix your error are listed bellow:

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Still having problems?
If you failed to fix your error using FortectMac Washing Machine X9, reach our support team for help. Please, let us know all details that you think we should know about your problem.
Fortect - a patented specialized Windows repair program. It will diagnose your damaged PC. It will scan all System Files, DLLs and Registry Keys that have been damaged by security threats.Mac Washing Machine X9 - a patented specialized Mac OS X repair program. It will diagnose your damaged computer. It will scan all System Files and Registry Keys that have been damaged by security threats.
This patented repair process uses a database of 25 million components that can replace any damaged or missing file on user's computer.
To repair damaged system, you have to purchase the licensed version of Fortect malware removal tool.To repair damaged system, you have to purchase the licensed version of Mac Washing Machine X9 malware removal tool.

Prevent websites, ISP, and other parties from tracking you

To stay completely anonymous and prevent the ISP and the government from spying on you, you should employ Private Internet Access VPN. It will allow you to connect to the internet while being completely anonymous by encrypting all information, prevent trackers, ads, as well as malicious content. Most importantly, you will stop the illegal surveillance activities that NSA and other governmental institutions are performing behind your back.

 

Recover your lost files quickly

Unforeseen circumstances can happen at any time while using the computer: it can turn off due to a power cut, a Blue Screen of Death (BSoD) can occur, or random Windows updates can the machine when you went away for a few minutes. As a result, your schoolwork, important documents, and other data might be lost. To recover lost files, you can use Data Recovery Pro – it searches through copies of files that are still available on your hard drive and retrieves them quickly.

 

About the author
Jake Doe
Jake Doe - Computer technology geek

Jake Doe is the news editor at UGetFix. Since he met Ugnius Kiguolis in 2003, they both launched several projects that spread awareness about cybercrimes, malware, and other computer-related problems.

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