Serbian spruce disease
Sorry for the long delay in our response, staff is limited this time of year.
In addition to the info included in your second request for help, these are some possibilities
Insect pests including scale insects-https://www.canr.msu.edu/news/soft_scales_of_spruce_and_pine
As you can see, without examination in person and with some magnification, it is difficult to diagnose. You can get a diagnosis in a couple ways-
Send freshly pruned samples which include dead material, green and yellowing needles to MSU Diagnostic lab, along with the tree history( approximate age-irrigation practices) and pictures. Instruction for taking samples, submittal form and fees are here:
Hire a certified arborist( not just a tree company) to come on site and give a complete diagnosis and treatment plan. Search by zip code here: www.treesaregood.org
From your photos this does look like tip blight. The lab can confirm this for a small fee. If you receive diagnosis in one of these ways and still have questions we will be happy to help. Thank you.