I have blogged before about setting up sharepoint for delegation so that you can access
resources on another computer as the currently authenticated user. We are doing this
for a web part we have that displays a folder structure on another server. Today,
we discovered it had stopped working, so I went through and verified that every setting
was the same. Sharepoint was still running under the same app pool, the app pool was
running as a domain account, annd the domain account was trusted to delegate for CIFS
on our file server.
Then I even dug up some test code I had for delegation to the same file server (the
webform was running on a different server than sharepoint) and it worked. So I tried
what I should have done as the first troubleshooting step: IISRESET from the command
line. After IIS restarted, delegation was working again. Not sure why it stopped,
or if it was more of a problem with the web part itself that a refresh fixed, either
way I thought I would document it as a reminder to try the simple stuff first.
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