Cannot pin extensions to the taskbar YET!
I run Firefox on a Dell laptop running Windows 10 Pro. I had to rebuild my system because of problems I couldn't solve. I've reinstalled Firefox and copied a profile I had saved in the cloud. When I click the extensions button ("puzzle piece") I do not see the extension list, only the add-ons page. do I have to uninstall and reinstall each extension to get it into the panel so I can pin some of them to the toolbar?
Chosen solution
I assume that you do not see extension's buttons on the toolbar ? Are they still present in browser.uiCustomization.state in about:config assuming you had them pinned previously ?
Did you only copy the main location in "AppData\Roaming" used personal data like bookmarks and logins or also the secondary location in "AppData\Local" used for temporary files like the disk cache ?
You can try to disable and re-enable an extension to see if that brings it back in the Extensions button drop-down.
You can try "Clear the startup cache..." via the "Help -> More Troubleshooting Information" (about:support) page.
You can also try to rename/remove compatibility.ini to force a reinitialize of the profile.
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Chosen Solution
I assume that you do not see extension's buttons on the toolbar ? Are they still present in browser.uiCustomization.state in about:config assuming you had them pinned previously ?
Did you only copy the main location in "AppData\Roaming" used personal data like bookmarks and logins or also the secondary location in "AppData\Local" used for temporary files like the disk cache ?
You can try to disable and re-enable an extension to see if that brings it back in the Extensions button drop-down.
You can try "Clear the startup cache..." via the "Help -> More Troubleshooting Information" (about:support) page.
You can also try to rename/remove compatibility.ini to force a reinitialize of the profile.