On the Start menu, select Settings > Apps > Default apps.Select which default you want to set, and then choose the app. You can also get new apps in Microsoft Store. ... You may want your .pdf files, or email, or music to automatically open using an app other than the one provided by Microsoft.
Source : https://support.microsoft.com/en-us/windows/change-default-programs-in-windows-e5d82cad-17d1-c53b-3505-f10a32e1894d
All file reader is an All file opener app in which you can open any kind of file. You can view word files, PDF files, excel files, and ppt files.
Source : https://cafebazaar.ir/app/com.documentmanager.Allfileviewer?l=en
Free up storage space: Insufficient storage can prevent app installations. Delete unnecessary files, uninstall unused apps, or transfer data to an SD card to free up space. Restart your phone: A simple restart can often resolve temporary glitches that might be causing the installation issue.Jun 8, 2021
Source : https://www.quora.com/How-do-you-fix-an-app-that-wont-open
Search File Explorer: Open File Explorer from the taskbar or right-click on the Start menu, choose File Explorer and then select a location from the left pane to search or browse.
Source : https://support.microsoft.com/en-us/windows/find-your-documents-in-windows-5c7c8cfe-c289-fae4-f5f8-6b3fdba418d2
SolutionGo to Chrome Browser.Navigate to Settings > Privacy and security > Site settings > Additional content settings > PDF documents.Select the option Open PDF in Chrome.
Source : https://knowledge.workspace.google.com/kb/how-to-open-a-pdf-file-without-downloading-it-000002252
Sometimes, corrupted system files or bad sectors on Windows system drive may cause hard drives, folders, or files inaccessible. Therefore, fixing corrupted system files and repair bad sectors on the hard drive may help you fix the Downloads folder that won't open error.Jan 4, 2024
Source : https://www.easeus.com/file-recovery/cannot-open-downloads-folder-in-windows-10.html