jquery - Cannot upload file larger than 30mb -

i doing asp.net web forms project , trying implement jquery file upload. able working smaller files files on 30mb not upload. progress bar appear stays @ start so:

in web.config have max request length , max allowed content length set.

<system.web>   <compilation debug="true" targetframework="4.5.1" />   <httpruntime targetframework="4.5.1" maxrequestlength="10240000" executiontimeout="1800" /> </system.web> 

and

<system.webserver>   <security>     <requestfiltering>       <requestlimits maxallowedcontentlength="4248576000" />     </requestfiltering>   </security> </system.webserver> 

i able around setting maxchunksize: 10000000 when asp.net not appending file correctly. save last chunk or locks , says "the process cannot access file because being used process."

i using filetransferhandler example in documentation: https://github.com/i-e-b/jqueryfileupload.net/blob/master/jqueryfileupload/filetransferhandler.ashx.cs

i'm not asp.net expert, believe have come across similar in past , if remember correctly, have add/edit on web.config:

<configuration>   <system.web>     <httpruntime maxrequestlength="xxxxxxxx" />   </system.web> </configuration> 

this can same amount of kb, 4248576000 if want. check set (should 30720 [=30mb] if causing problems...)