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"Extend Volume" greyed out in Disk Management: causes and solutions

You want to enlarge drive C: or another partition, for example after cloning Windows to a bigger SSD or shrinking another partition, but in Disk Management the Extend Volume option is greyed out. Windows only enlarges a volume under specific conditions: most of the time, the free space is simply not in the right place.

.NET Framework 3.5 installation fails on Windows 11: causes and solutions

An older program or game requires .NET Framework 3.5, and the installation fails: a "Windows couldn't complete the requested changes" window, error code 0x800F0906, 0x800F081F or 0x800F0907, or a checkbox missing from Windows features. Since Windows 11 26H1, Microsoft has changed how this component is installed: the ri

"python" opens the Microsoft Store or is not recognized on Windows: causes and solutions

You type python in a terminal and Windows opens the Microsoft Store, or the command is not found even though Python seems to be installed. Since Python 3.14, the recommended installation method on Windows is the Python install manager, which provides the python, py and pymanager commands. Most failures come from a Wind

"winget" is not recognized on Windows: causes and solutions

You type a winget command in Command Prompt or PowerShell and Windows says the term is not recognized, or the command closes without displaying anything. WinGet, the Windows package manager, is not a separate program: it ships with the App Installer component, delivered through the Microsoft Store. The fault almost alw

File cannot be deleted because it is open in another program: cause and solutions

You want to delete, rename or move a file, and Windows 11 refuses, saying it is open in a program? Windows protects a file as long as a process keeps it open: this is not a fault, but you need to identify that process. This guide offers a progression from the simplest to the most technical, with Microsoft's free tools

"Running scripts is disabled on this system" in PowerShell: causes and solutions

You run a PowerShell script (.ps1 file) provided by a tutorial, a program or your own work, and Windows PowerShell refuses to load it? This block comes from PowerShell's execution policy, a safety setting that decides whether scripts can run and whether they must be signed. This guide explains how to read this setting,

File over 4 GB cannot be copied to a USB drive: FAT32 and solutions

Windows refuses to copy a large file (video, ISO disc image, backup, virtual machine disk) to a USB flash drive, an SD card or an external drive, even though the free space shown is more than enough? In the vast majority of cases, the cause is not the available space but the drive's file system: FAT32 cannot hold a sin

Wireless projection (Miracast) not working on Windows 11: causes and solutions

You want to show your Windows 11 PC screen on a TV, a projector or another PC without a cable, but the display does not appear in the list, the connection fails or Windows asks you to plug in a cable? This guide starts from what you observe to find the cause, following Microsoft's support pages. Windows wireless projec

App blocked by Smart App Control on Windows 11: what to do

Windows 11 refuses to open a program you have just downloaded, and the block comes from Smart App Control? This guide explains how this protection decides to block an app, how to check that it is really the cause, and which options actually exist, based on Microsoft's support pages. One key point to know from the start

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