c# - Object reference not set to an instance of an object in Page declaration -


i having issue existing site functioning until last week. when open site in vs 2013 "object reference not set instance of object" error/warning on page declaration of .aspx pages , .master pages. website builds correctly when run displays blank page , no errors.

i have verified code behind file exists , it's namespace , class entered page declaration. adding new page project gets same error , have verified references present. website 3.5 framework. appreciated. thanks.

clayton

image of error message

since wasn't making headway in getting resolved decided create new web project , move existing files new project. decided 1 file @ time see if nail down page or setting causing issue. files copied on , site ran expected until started tweek web config file match of settings old project. worked until added line

<identity impersonate="true" username="domain\username" password="password" />

once saved , ran webpage started getting same errors other project. commenting out line resolved issue me i've got figure out why cause such strange issue.

thanks time.

edit: oddly enough line works without specifying user account if put <identity impersonate="true" /> works expected.


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