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• Thank you, I have resolved this issue by reinstalling Zotero 7.

  in Fixing Zotero 7 PDF Viewer Default App Reset Issue ('Program Not Found' Error) Comment by HaoDongding May 23, 2025
• The files can be opened using Zotero's built-in viewer, but this setting does not persist after restarting Zotero. If the operation is not repeated, the previous error will reappear.

  in Fixing Zotero 7 PDF Viewer Default App Reset Issue ('Program Not Found' Error) Comment by HaoDongding May 23, 2025
• I have uninstalled the Scholaread plugin and software, and the Scholaread option is no longer visible in the plugin list. Although files still show Scholaread as the default opening method, they are actually opened via WPS. When I disabled WPS, the …

  in Fixing Zotero 7 PDF Viewer Default App Reset Issue ('Program Not Found' Error) Comment by HaoDongding May 23, 2025