I would like to ask on how reset or restart Application Pool in SharePoint Server?
I have googled the solution for this, I found similar solutions in regards to IISAPP.vbs, but that is my problem, that iisapp.vbs, because everytime I run it in cmd line, I receive error saying "IISAPP, is not recognized as an internal or external command, operable program or batch file."
Some site says try to run iisapp /? in the command line, but still same error.
Thanks in advance!
.vbs is VBScript, and it requires that your computer/server can run such.
The error you get, tells that this is not possible on your server.
I.e. you'll need to ensure that you can run such.
In Windows Server, vbscript is enabled by default, so somebody must have disabled it.
There may have been good reasons for disabling vbscript (e.g. that was used as mitigating measure against the "I Love You" bug/virus years ago).
Check out various resources on the Internet, about how to disable (hence enable) vbscript, e.g.: