PS will not open after attempting update

PS will not open. I am told "The application “Adobe Photoshop 2026.app” can’t be opened." Tahoe 26.6 macbook with Apple chip. Started with trying to update (from either 27.6 or 27.7) which ran a long time and then messaged: "This is taking an unusually long time, investigating". waited some more, at least ½ hr in total and then canceled the update. Then tried to open PS and got the message: "The application “Adobe Photoshop 2026.app” can’t be opened.”

Subsequently I succeeded in updated bridge.