Window Defender error 8007139f

Question

ERROR CODE  -8007139f

[Original Title: window defender]

Answer 1

Please execute the steps here:

https://answers.microsoft.com/en-us/protect/for...

Answer 2

Take a look at Troubleshoot Windows Defender Update Issues in Windows 10

Answer 3

If you are experiencing problems installing Defender definitions, try the following:

You can also download and install the latest definitions at the following link:

32 bit:

https://go.microsoft.com/fwlink/?LinkID=121721&...

64 bit:

https://go.microsoft.com/fwlink/?LinkID=121721&...

Source:

https://www.microsoft.com/en-us/wdsi/definitions

Still not working?

Before carrying out this procedure, disconnect from the Internet. That means turning off Wi-Fi and disconnecting from a wired connection. If you don't, Windows 10 will indicate some files are in use and cannot be modified or the command will be non-responsive. Also, you should restart your computer after disconnecting from the Internet. The easiest way to do it is to enable Airplane mode from the Action Center - Windows key + A.

Open Start, type: CMD

Right click CMD

Click Run as administrator

Type each of the following then hit Enter

taskkill /f /fi "SERVICES eq wuauserv" (Do this multiple times)

net stop cryptSvc

net stop bits

net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

rmdir C:\Windows\SoftwareDistribution\DataStore

rmdir C:\Windows\SoftwareDistribution\Download

When complete, hit Enter, then restart, then try updating again.

If that does not work..

1. Open Start, type: CMD

Right click CMD

Click Run as administrator

Type each of the following then hit Enter

Run these codes:

Net Stop bits

Net Stop wuauserv

Net Stop appidsvc

Net Stop cryptsvc

Ren %systemroot%\SoftwareDistribution SoftwareDistribution.bak

Ren %systemroot%\system32\catroot2 catroot2.bak

Net Start bits

Net Start wuauserv

Net Start appidsvc

Net Start cryptsvc

After running these commands, check if your issue is fixed.

Try this additional tips to see if they work:

Troubleshoot Windows Update Problems in Windows 10 Using These Five Tips

https://windows10.help/blogs/entry/23-troublesh...

If Windows Defender is not working at all:

Open Start, type: regedit

Right click regedit

Click Run as administrator

Navigate to the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SecurityHealthService

and modify the Start value from 4 to 2. Restart your computer to re-enable the Windows Defender Security Center Service.

Press Windows key + R

Type: services.msc

Hit Enter

Press Windows key + R

Type: services.msc

Hit Enter

Scroll down to Windows Defender Security Center Service

Double click it

Set its Start up type to Automatic

Click Start

Click Apply then OK

Restart

If none of the above works, I recommend you perform a repair upgrade:

http://answers.microsoft.com/en-us/insider/wiki...