https://community.blueprism.com/t5/Product-Forum/Unable-to-calculate-run-mode-object-IE-Save-As-Window-does-not/m-p/57422#M11431 Reading between the lines I'd say it sounds like your solution is calling an object that does not exist Thu, 01 Mar 2018 22:30:00 GMT Denis__Dennehy 2018-03-01T22:30:00Z https://community.blueprism.com/t5/Product-Forum/Unable-to-calculate-run-mode-object-IE-Save-As-Window-does-not/m-p/57421#M11430   Getting this error  when we try to add to the Environment list : Failed to create session on - Failed to get effective run mode - Unable to calculate run mode - object IE Save As Window does not exist.         Thu, 01 Mar 2018 17:06:00 GMT https://community.blueprism.com/t5/Product-Forum/Unable-to-calculate-run-mode-object-IE-Save-As-Window-does-not/m-p/57421#M11430 SaurabhKumar1 2018-03-01T17:06:00Z https://community.blueprism.com/t5/Product-Forum/Unable-to-calculate-run-mode-object-IE-Save-As-Window-does-not/m-p/57422#M11431 Reading between the lines I'd say it sounds like your solution is calling an object that does not exist Thu, 01 Mar 2018 22:30:00 GMT https://community.blueprism.com/t5/Product-Forum/Unable-to-calculate-run-mode-object-IE-Save-As-Window-does-not/m-p/57422#M11431 Denis__Dennehy 2018-03-01T22:30:00Z