We have a custom search connector that we built to make documents from another system searchable from SharePoint. This worked fine for a year until we decided to add a CU(October 2015 uber).

The connector still works fine when crawling folders but fails when it comes to files with this error in ULS:

CRobot Thread::Thread failed to move BDC blob file for docID XXXXX :file name chunk is corrupted Index is not number

I've searched everywhere for an answer. I've even set up a new development server from scratch with this patch applied and the error occurs there as well.

Any ideas what is causing this?

1 Answer 1


Robert, cause for this: When you execute a full crawl for a binary large objects (BDC) content source that contains email messages that have attachments, you receive the following error message: CRobotThread::Thread failed to move BDC blob file.

this is fixed by (Cumulative update package for SharePoint Foundation 2013 (SharePoint Foundation server-package): May 7, 2014) however after installing September 2015 Uber pack you can observe this issue.

Take a look below: https://blogs.technet.microsoft.com/stefan_gossner/2015/09/17/uber-packages-for-september-2015-cu-for-sharepoint-2013-have-been-released/


I will update late.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.