Heads up - Seems to be some trouble with Defender definition updates

[spyder]

I noticed this morning (after patch tuesday) that some patches were missing on our SUP. Furthermore, SMS_WSUS_SYNC_MANAGER had this weird error:

WSUS Synchronization failed.
 Message: ImportUpdateError: .
 Source: Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.SyncWSUS.
 

And wyncmgr.log had this:

Sync failed: ImportUpdateError: . Source: Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.SyncWSUS
STATMSG: ID=6703 SEV=E LEV=M SOURCE="SMS Server" COMP="SMS_WSUS_SYNC_MANAGER" SYS=[FQDN-NAME-OF-SERVER] SITE=XXX PID=3036 TID=7664 GMTDATE=ons jun 13 17:41:41.389 2018 ISTR0="Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.SyncWSUS" ISTR1="ImportUpdateError: " ISTR2="" ISTR3="" ISTR4="" ISTR5="" ISTR6="" ISTR7="" ISTR8="" ISTR9="" NUMATTRS=0

After some troubleshooting I found that deselecting either the category 'Definition updates' or the product 'Windows Defender' made the error go away.

Googling and troubleshooting all day, I finally found this on Technet:
https://social.technet.microsoft.com/Forums/en-US/0f58a38a-042f-4475-b336-b7de3570ab7e/adding-defender-updates-is-causing-sync-to-fail?forum=ConfigMgrCompliance

Looks like there might be a bug somewhere...

[spyder]

Seems to be fixed now. It was a problem with the virus definition that somehow caused update sync to break.

[anyweb]

good to hear it