Monday, March 23, 2015

Event ID 139 error MUP --- SOLVED

Event ID 139 error MUP

 

We had following situation:
On most of our Windows Server standard 2008  SP2 systems we get an Delayed Write File event, about every 5 minutes.

Event ID: 139
Source: Mup
Description: {Delayed Write FIle} Windows was unable to save all data for the file \\.... etc

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I googled a lot to find out the soluction .. and finally resolved the issue with simple tweak

Right click on NIC -- Properties --> configure

Look for the below values and disable it

IPv4 Large Send Offload 

TCP Connection Offload (IPv4).



-- Reboot is not required as per MS article .. But , it's worked after the reboot

(This is out of my own experience )

 

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