what does "no mode specified" error means in suiteCRM

SuiteCRM Forum - English Language Installation & Upgrade Help
1

hi, i’am getting this error all the time, what does it mean how to resolve it.

Config:
Windows server 2012 r2
iis

2

No issues from me using Windows server 2012 r2 with IIS
Could it be that your server lacks some modules/features installed?

On the “no mode specified” it can be related to Handlers.
Are you using the integrated or classic Mode for the application?
I think I can’t help you on that!

3

i don’t know where the problem come from, i tried changing permissions to full control. and still the same error, it’s two weeks now with the same problem.

i’am using the integrated AppPool

4

what are Handlers? could you clarify please