System.Web.HttpException: Request timed out

Question

I have SP webpart for importing budget items in SP List. For some 4000 items it tooks about 3-4 minutes (it do some custom checking, parsing and importing) to import that (on my dev pc). But if I start that import on my production test server he start to import, it manage to import about 2000 items in list(in about 2 minutes), and than unexpected exception occur. Log say "System.Web.HttpException: Request timed out." I looked to IIS setting to compare setting(app pool,web application) between my pc and server. They are same. Then I looked in web.config to check executiontimeout. Web.config said:

  <httpRuntime maxRequestLength="2097151" executionTimeout="3600" />

which should be more than enough (2GB, and 60 minutes). Please any suggestion why webpart goes to timeout, when he is able to connect to SP, to read input files, to insert half of records in list?

Answer 1

There is a web.config in the Layouts folder in the SharePoint Root, change the timeout on this if you need to, too.

Also: This seems to be a great help when debugging, saves you from rushing in a panic to step through code before the worker process bails on you.

Answer 2

Check the settings for Request timeout in IIS:

IIS Manager -> Properties of Web Site -> Tab Web Site -> Connection timeout

There are multiple configurations where you can set the timeout and this is just one of them.