If I start IrfanView, I am prompted each time to start as Administrator, why?.Is there a portable IrfanView version (for USB sticks, CDs etc.)?.I downloaded IrfanView (or PlugIns) but when I start it, I get the message ' This is not a valid (Win32) application'?.Problem: The Add button in the slideshow/batch dialog won't add the selected file to the file list.Problem: IrfanView won't save settings or there is a warning about read-only INI file.Problem: The icons on my desktop are wrong, all show IrfanView/Firefox/etc.Why Windows File Explorer shows IrfanView (or some standard) icon for images instead of thumbnail?.Can I add more PlugIns to the App version (from Microsoft Store)?.How can I copy my IrfanView settings to another PC?.How can I change the desktop icon for IrfanView?.How can I change the icon for IrfanView associations?.

How can I play QuickTime MOV (or any other video) files with IrfanView?.Installation problem: The program did not install properly or installation error is shown.Generic problem with video files: If I try to play some videos (AVI, MP4, MOV etc.): the video is not playing, or I get the error message 'Video not available, cannot find decompressor'!.Problem: I can't set IrfanView as my default viewer on Windows 11?.How can I set IrfanView as my default viewer?.How to Upgrade IrfanView: Is it necessary to uninstall the older version before installing the newer version?.How to properly install IrfanView or Plugins?.Is there a direct download link for IrfanView and Plugins?.

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