After Installing Virtual Delivery Agent, The Machine Goes Into Reboot Loop
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Article ID: CTX330888
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Description
- After the VDA installation finishes, the machine goes into Reboot loop and admin is unable to login.
- The machine boots fine in Safe Mode or if VDA software is uninstalled.
- Booted the VDA in Safe Mode and from event logs, found Kerberos Error from LsaSrv and lsass.exe termination and crash errors causing an unexpected reboot.
SYSTEM EVENT LOGSLog Name: System
Source: LsaSrv
Event ID: 5000
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: xxx
Description:
The security package Kerberos generated an exception. The exception information is the data.Log Name: System
Source: User32
Event ID: 1074
Task Category: None
Level: Information
Keywords: Classic
User: SYSTEM
Computer: xxx
Description:
The process wininit.exe has initiated the restart of computer xxx on behalf of user for the following reason: No title for this reason could be found
Reason Code: 0x50006
Shutdown Type: restart
Comment:
The system process 'C:\Windows\system32\lsass.exe' terminated unexpectedly with status code -1073741819. The system will now shut down and restart.APPLICATION EVENT LOGSLog Name: Application
Source: Application Error
Event ID: 1000
Task Category: Application Crashing Events
Level: Error
Keywords: Classic
User: N/A
Computer: xxx
Description:
Faulting application name: lsass.exe, version: 10.0.17763.1, time stamp: 0xf1beaffa
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x0000000000000000
Log Name: Application
Source: Microsoft-Windows-Wininit
Event ID: 1015
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: xxx
Description:
A critical system process, C:\Windows\system32\lsass.exe, failed with status code c0000005. The machine must now be restarted.
Resolution
Open a ticket with Citrix Support and provide full crash dumps of lsass.exe.
If the crash dump stack matches the known issue then a private fix will be provided for ctxauth.dll to address this issue.
A public fix for this issue is yet to be released.
Problem Cause
From crash dumps of lsass.exe, it was found that Ctxaut.dll was calling a null pointer causing Window's DEP (Data Execution Prevention) to kick in and crash lsass.exe
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