Video Screencast Help

SEP causing Wi-Fi connectivity problems?

Created: 27 Aug 2013 • Updated: 27 Aug 2013 | 12 comments

I have a user receiving limited or no connectivity on random computers on a network adapter with SEP installed. The user is running with the following configuration:

Computer OS: Windows 8 Enterprise x64
Type of Computers: HP 2730P, HP 810 Evolve, Fujitsu T731
Description: Randomly dropping of the Wi-Fi network
Error Message: No error message, user just has to disconnect and reconnect to Wi-Fi

A new wireless network was installed this year at the location. We checked the machine’s IP and they appear to be valid and getting definition updates correctly. One of the IPs brought back two clients. See screenshots:

810-4.JPG

 

new.jpg

Any ideas? Thoughts?

Operating Systems:

Comments 12 CommentsJump to latest comment

.Brian's picture

What's the exact version of SEP and what components do you have installed?

Please click the "Mark as solution" link at bottom left on the post that best answers your question. This will benefit admins looking for a solution to the same problem.

pete_4u2002's picture

whats the version?

does it disconnect after certain time?

 

b3492dK7aEf5594's picture

SEP Version: SEP 12.1.2015.2015
Random disconnects: Asking the user to see if he can identify any patterns between the three. Pending response back.

.Brian's picture

Do you have the client firewall installed?

Please click the "Mark as solution" link at bottom left on the post that best answers your question. This will benefit admins looking for a solution to the same problem.

b3492dK7aEf5594's picture

Information back from the user. Spotty. Nothing consistent.

.Brian's picture

in the screenshot, you have two PCs that at one point had the same IP address. Does one of those user have a static address set?

Perhaps there is an IP conflict happening.

Please click the "Mark as solution" link at bottom left on the post that best answers your question. This will benefit admins looking for a solution to the same problem.

b3492dK7aEf5594's picture

I will check with the user to see if a staic IP address is set on any of the PC's and get back to you.

b3492dK7aEf5594's picture

User is reporting all of the HP2730p and Fujitsu T731 are getting the blue screen of death. He removed Symantec and it resolve the issue. See screenshot from the user. Thoughts?

new.png

See error logs provided from the user:

==================================================
Dump File         : 082713-22171-01.dmp
Crash Time        : 8/27/2013 3:38:11 PM
Bug Check String  : DRIVER_IRQL_NOT_LESS_OR_EQUAL
Bug Check Code    : 0x000000d1
Parameter 1       : 00000000`00000008
Parameter 2       : 00000000`00000002
Parameter 3       : 00000000`00000000
Parameter 4       : fffff880`01fbf86d
Caused By Driver  : cng.sys
Caused By Address : cng.sys+116f86d
File Description  : Kernel Cryptography, Next Generation
Product Name      : Microsoft® Windows® Operating System
Company           : Microsoft Corporation
File Version      : 6.2.9200.16433 (win8_gdr.121010-1704)
Processor         : x64
Crash Address     :
Stack Address 1   :
Stack Address 2   :
Stack Address 3   :
Computer Name     :
Full Path         : C:\windows\Minidump\082713-22171-01.dmp
Processors Count  : 4
Major Version     : 15
Minor Version     : 9200
Dump File Size    : 285,072
Dump File Time    : 8/27/2013 3:39:21 PM
==================================================

==================================================
Dump File         : 082713-21687-01.dmp
Crash Time        : 8/27/2013 4:56:40 PM
Bug Check String  : DRIVER_IRQL_NOT_LESS_OR_EQUAL
Bug Check Code    : 0x000000d1
Parameter 1       : 00000000`00000050
Parameter 2       : 00000000`00000002
Parameter 3       : 00000000`00000000
Parameter 4       : fffff880`01a792c5
Caused By Driver  : NETIO.SYS
Caused By Address : NETIO.SYS+3a2c5
File Description  : Network I/O Subsystem
Product Name      : Microsoft® Windows® Operating System
Company           : Microsoft Corporation
File Version      : 6.2.9200.16433 (win8_gdr.121010-1704)
Processor         : x64
Crash Address     : ntoskrnl.exe+5a440
Stack Address 1   :
Stack Address 2   :
Stack Address 3   :
Computer Name     :
Full Path         : C:\windows\Minidump\082713-21687-01.dmp
Processors Count  : 4
Major Version     : 15
Minor Version     : 9200
Dump File Size    : 285,088
Dump File Time    : 8/27/2013 4:57:50 PM
==================================================
 

b3492dK7aEf5594's picture

The user went to manufacture website and downloaded newest version available for his computers.

.Brian's picture

Have you tried 12.1 RU3 to see if it fixes the issue?

Please click the "Mark as solution" link at bottom left on the post that best answers your question. This will benefit admins looking for a solution to the same problem.