Installing Unigram from a File To install Unigram, simply download the .msixbundle file from the official channel and open it. Potential Issues: 1. Unigram requires Windows 10 Pro or Home version 1903 (March 2019, 10.0.18362.0) or later. Any version of Windows 11 will work as well. 2. If the .msixbundle file does not open, download the App Installer from the Microsoft Store. 3. If the installation fails, you may need additional components, which can be found on the official channel. Upgrading from Unigram 10.x to Version 11: This section is about upgrading Unigram 10.x to 11.x, not Windows 10 to 11. It is relevant only if you manually installed Unigram from outside the Microsoft Store. Starting with version 11, Unigram has changed its digital signature, meaning that version 11.x will be installed as a new application. You will need to log in again and manually remove the older version. You can find the old version’s data in this folder: %LOCALAPPDATA%\Packages\TelegramFZ-LLC.Unigram_1vfw5zm9jmzqy\LocalState If You Don't Have Microsoft Store: You can still install Unigram without using the Microsoft Store, provided you haven’t removed too many UWP (Universal Windows Platform) components. If you can't open the .msixbundle file as described in point 2, you can manually install the App Installer: 1. Press Win + R. 2. In the pop-up window, type powershell and press Enter to open a Powershell terminal. 3. The following command will download the latest official version of the package installer from Microsoft's repository and install it. Copy the command below, return to the terminal, and right-click in an empty space to paste it from the clipboard. Press Enter:

   Add-AppxPackage https://github.com/microsoft/winget-cli/releases/latest/download/Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle
   

4. If the command succeeds, you can install the additional components and Unigram using the usual method. 5. If you get an error mentioning the “Microsoft.UI.Xaml.2.8” package, install it with the following command (for 64-bit AMD and Intel systems):

   Add-AppxPackage https://github.com/microsoft/microsoft-ui-xaml/releases/download/v2.8.6/Microsoft.UI.Xaml.2.8.x64.appx
   

You can find links to versions for other architectures on GitHub. After this, try installing the App Installer again. If None of the Above Works: If none of the steps resolve the issue, your system may be too damaged to run UWP applications. In this case, reinstall Windows or follow online guides to restore the Microsoft Store. #Unigram