This resolves Error Code 1 in the vast majority of cases because it forces the deletion of the corrupted configuration files that a standard uninstall leaves behind.
Navigate to your main installation directory (usually C:\Program Files (x86)\Ubisoft\Ubisoft Connect ) and delete the folder. ubisoft game launcher error code 1
If you cannot uninstall or want to try a quick fix first: This resolves Error Code 1 in the vast