You need to place places.sqlite from the old profile to the current profile in "AppData\Roaming" in the new install.

You can copy certain files with Firefox closed from one profile folder to the current profile folder to recover personal data.

• https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data

Note that best is to avoid restoring a full profile folder and only restore important files that are safe to restore/transfer.

• bookmarks and history: places.sqlite
• favicons: favicons.sqlite
• bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
• cookies.sqlite for the Cookies
• formhistory.sqlite for saved autocomplete Form Data
• logins.json (encrypted logins) and key4.db (encryption key/primary password) for logins saved in the Password Manager
• cert9.db for certificates stored in the Certificate Manager
• persdict.dat for words added to the spell checker dictionary
• permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
• sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)

Hi cor-el... Thanks for that... meanwhile, I looked more at the problem and decided to transfer the Directory called Mozilla which contained the sub-Directories Crash Reports,

Hi cor-el... Thanks for that... meanwhile, I looked more at the problem and decided to transfer the Directory called Mozilla which contained the sub-Directories Crash Reports, Pending Pings, Profiles and the two files, installs.ini and profiles.ini to the fresh install of Mozilla. This resolved the problem :)

Thanks again...