IIS 7 and Above
ISAPI Extension cannot write temp files
Re: ISAPI Extension cannot write temp files
Mar 10, 2019 11:42 PM|RolandSmith|LINK
I've already tried assigning security on folders to the custom AppPool name. On the laptop where writing files works, I didn't have to do anything to get it to work, it just worked perfectly the first try.
There must be something else missing. I first tried C:\Windows\Temp, then I created C:\Temp, then I tried the folder where the ISAPI dll is installed under C:\Program Files (x86). I've tried assigning write access to IUSR, IIS_USRS, and the AppPool name.