What is Load User Profile in IIS 8.5?

Specifies whether IIS loads the user profile for an application pool identity. When set to True, IIS loads the user profile for the application pool identity. Set to False when you require IIS 6.0 behavior.


This is great for application isolation.  It also can have an impact on your application if you are using Active Directory to manage application access.  The Windows Cryptographic Service Provider will try to store or load a key for your certificate in the user store, and this will require a profile to be available; otherwise, a cryptographic context error will occur.


Note that the Load User Profile setting only applies to user accounts. Service Accounts like NETWORK SERVICE and ApplicationPoolIdentity have special handling.

Source

http://stackoverflow.com/questions/17149132/what-exactly-happens-when-i-set-loaduserprofile-of-iis-pool


https://technet.microsoft.com/en-us/library/cc745955.aspx

Unrecognized attribute 'targetFramework'.

We have just move to new servers and trying to get the website up and running.  I ran into this error when I tried to run an aspx page.  The static files and asp files ran without issue.  As soon as the Framework was invoked, I popped this error.  This an easy one to fix.  Just look at the version of the framework for your application pool.  It is most likely set to something below 4.  Set it to 4.0 and the issue should be resolved.


This is the issue.  You are trying to invoke a higher level version of the framework on an app pool which is running a lower version of the framework.