Differences – IIS 8.5 — IIS 7.5 – Permissions Field

November 30, 2016

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in the last recent days i was handle with iis permissions issue,

while trying to send http request from iis application (windows server 2012 r2 IIS 8.5)  – I get an exception 401 unauthorized. (SSL Client Certificate Authentication)

when i try to simulate it with different OS (2008 R2 IIS 7.5) – I get 200 OK & everything goes as expected.

after a little research we reached to obtain a local admin to the application pool user to check if the following scenario related to a permissions field .

and guess what? it’s works as we verified  – application pool user identity needs a permissions on Manage Private Keys on Local Machine Store certificate Only!



Windows 2012 R2 IIS 8.5 application pool identity User needs full control permissions on:

Manage Private Keys on Local Machine Store certificate :



We would not need a local admin permissions for our application pool identity user on Windows server 2012 R2 IIS 8.5 .



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