Widows 8/8.1 VPN connections hang

Question

I've installed Windows 8 and 8.1 on a number of computers, and find in each case that the L2TP connections I create to connect to various VPN concentrators hang after a few times connecting to one and disconnecting to connect to another or the same one
again. This never seems to happen on the first connection attempt after a reboot, and often doesn't occur with the next connection attempt or two, but if I reconnect to a few VPNs before rebooting, eventually the attempt to connect just hangs, and thereafter
the network connections charm will not come up again until after I reboot.  Worse, when I then try to reboot, the system always sits at "Restarting..." or "Shutting down..." for several minutes before the emoticon BSOD shows up.

Answer 1

Hello Sean E. Woods，
How do you set up the VPN?
Please check if other computers have the same issue when they connect to the VPN.
If so, this issue may be caused by the VPN.
I have check the new dump file, and here is the result.
BugCheck 9F, {4, 12c, 86eb7bc0, 82873b50}
Implicit thread is now 86eb7bc0
Probably caused by : ntkrpamp
DRIVER_POWER_STATE_FAILURE (9f)
A driver has failed to complete a power IRP within a specific time.
Arguments:
Arg1: 00000004, The power transition timed out waiting to synchronize with the Pnp subsystem.
Arg2: 0000012c, Timeout in seconds.
Arg3: 86eb7bc0, The thread currently holding on to the Pnp lock.
Arg4: 82873b50, nt!TRIAGE_9F_PNP on Win7 and higher
FOLLOWUP_NAME:  MachineOwner
MODULE_NAME: ntkrpamp
IMAGE_VERSION: 
FAILURE_BUCKET_ID:  0x9F_4_IMAGE_ntkrpamp
BUCKET_ID:  0x9F_4_IMAGE_ntkrpamp
ANALYSIS_SOURCE:  KM
FAILURE_ID_HASH_STRING:  km:0x9f_4_image_ntkrpamp
Yes, DRIVER_POWER_STATE_FAILURE (9f) A driver has failed to complete a power IRP within a specific time.
Please check and update the USB driver.
About the Error code 691, please take a look at the following article.
http://blogs.technet.com/b/rrasblog/archive/2009/08/12/troubleshooting-common-vpn-related-errors.aspx
1. Make sure correct username and password is typed.
2. Make sure ‘Caps Lock’ is not turned ON while typing credentials.
3. Make sure the authentication protocol as selected on the client is permitted on the server.
Best regards,
Fangzhou CHEN
Fangzhou CHEN
TechNet Community Support