Problem:

You get the error:
HTTP 500.100 - Internal Server Error - ASP error
Internet Information Services
The technical information for support personnel is:
Error Type:
Server object, ASP 0177 (0x800401F3)
Invalid class string 
/includes/util.asp, line 21
Browser Type:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 
Page:
GET /login.asp

Solution:

In IIS, change the Directory Security User to the Local Administrator.
 

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Last Modified On: December 10, 2016