I installed a new WSUS server in Win 2008 R2, however, I found it can not download the update even 3 days past. How can I fix it, thanks!

Download Status

  Updates needing files: 4,939

  Downloaded 0.00 MB of 56,689.08MB.

getting an error during sync or just nothing happens?

make sure your firewall/proxy are not blocking the URLs in this article and make sure name resolution is working from that server

https://technet.microsoft.com/en-us/library/bb693717.aspx?f=255&MSPPError=-2147217396

ensure you have enough disk space

Hi, Armin,

There is no firewall/proxy for my WSUS server, and the disk space is enough, however, I got this information after run  BITSADMIN /LIST /VERBOSE /ALLUSERS, any advices?

GUID: {EE9F9B13-CEB4-42A3-8B37-2C3DB6477A36} DISPLAY: 'd099e9dc-7846-4b90-b9d2-64dd761340a4'
TYPE: DOWNLOAD STATE: TRANSIENT_ERROR OWNER: NT AUTHORITY\NETWORK SERVICE
PRIORITY: FOREGROUND FILES: 0 / 1 BYTES: 0 / UNKNOWN
CREATION TIME: 8/27/2015 7:02:33 PM MODIFICATION TIME: 8/28/2015 1:12:53 PM
COMPLETION TIME: UNKNOWN ACL FLAGS:
NOTIFY INTERFACE: UNREGISTERED NOTIFICATION FLAGS: 3
RETRY DELAY: 600 NO PROGRESS TIMEOUT: 86400 ERROR COUNT: 110
PROXY USAGE: NO_PROXY PROXY LIST: NULL PROXY BYPASS LIST: NULL
ERROR FILE:   http ://wsus.ds.www.download.windowsupdate.com/msdownload/update/software/secu/2008/03/windows6.0-kb941693-x64_a522008f762d959c61d6a6d0d8597ea444658b34.cab d:\WSUS\WsusContent\34\A522008F762D959C61D6A6D0D8597EA444658B34.cab
ERROR CODE:    0x80072f78 - The server returned an invalid or unrecognized response

ERROR CONTEXT: 0x00000005 - The error occurred while the remote file was being processed.

DESCRIPTION: SUSFile
JOB FILES:
 0 / UNKNOWN WORKING http ://wsus.ds.www.download.windowsupdate.com/msdownload/update/software/secu/2008/03/windows6.0-kb941693-x64_a522008f762d959c61d6a6d0d8597ea444658b34.cab -> d:\WSUS\WsusContent\34\A522008F762D959C61D6A6D0D8597EA444658B34.cab
NOTIFICATION COMMAND LINE: none
owner MIC integrity level: SYSTEM
owner elevated ?           true
This job is read-only to the current CMD window because the job's mandatory
integrity level of SYSTEM is higher than the window's level of HIGH.
Peercaching flags
  Enable download from peers      :false
  Enable serving to peers         :false

CUSTOM HEADERS: NULL