Menu list in "edit in" for photoshop and other no more active

If the 'Edit-In' menus are visible but Greyed out, this may be caused by-

1) The photo is 'missing'. Lightroom does not know where the original photo is stored- it has been deleted, renamed, moved, by the OS outside of LrC.  Grid view thumbnail is showing a [!] on the border? (or possibly a corrupt file)

MISSING PHOTOS

2) You are using Smart Previews and the original file is not connected to the computer or available to Lightroom. (eg. external usb drive not connected). Plug in the external drive- check that it is using the same Name/Letter as before. (Also see the link for Missing photos)

3) Lightroom and Photoshop are not linked correctly in Registry/plist.  See this link-

EDIT IN Photoshop command missing

Hi there,

We're sorry about the trouble. Would you mind sharing the version of Lightroom Classic and Photoshop you're using?

Are you using the Smart previews or original file? Have you tried any troubleshooting steps so far? Is it happening with all files? Since when have you noticed this issue?

Try resetting the preferences of Lightroom Classic by:  https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html
Backup your preferences before resetting by: https://helpx.adobe.com/lightroom-classic/kb/preference-file-and-other-file-locations.html

Let us know if that helps.

Regards,

Tarun