Lotus Notes 8.5.2 or 8.5.3 crashes after the migration of Symantec Endpoint Protection (SEP) to 12.1.1000 (12.1 RU1)

Article:TECH179128  |  Created: 2012-01-17  |  Updated: 2012-11-20  |  Article URL http://www.symantec.com/docs/TECH179128
Article Type
Technical Solution



After the migration of the Symantec Endpoint Protection (SEP) client to version 12.1 RU1, Lotus Notes crashes with the NLNHOOK.EXE error

The Notes.ini file may not contain any references to NLNVP.


Panic: semaphore invalid or not allocated


Additional Errors:

Faulting application name: nlnhook.exe, version: 12.1.1000.157, time stamp: 0x4eadfee9
Faulting module name: nlnvp.dll_unloaded, version:, time stamp: 0x4eadfffb
Exception code: 0xc0000005
Fault offset: 0x5d458ad3
Faulting process id: 0xc34
Faulting application start time: 0x01cd4ba2c3db7f29
Faulting application path: C:\Program Files\Symantec\Symantec Endpoint Protection\12.1.1000.157.105\Bin\nlnhook.exe
Faulting module path: nlnvp.dll
Report Id: 02e13191-b796-11e1-aa2f-180373af6ff2


Lotus Notes 8.5.2 or 8.5.3

Symantec Endpoint Protection (SEP) client 12.1


The notes.ini file does not contain anything related to NLNVP or it contains only an old reference to this add on.


This issue is resolved by improvements contained in Symantec Endpoint Protection 12.1 RU2.  Please upgrade affected computers to the latest available release of SEP.


Symantec Endpoint Protection and Lotus Notes both crash with Lotus Notes plug-in installed (enabled or disabled)
Fix ID: 2665371
Symptom: The Lotus Notes Email Auto-Protect plug-in crashes, which cause Symantec Endpoint Protection and Lotus Notes to crash. These crashes occur even if you disable the plug-in.
Solution: Added code to better clean up after previous installs, and to update the notes.ini file before nlnvp.dll is launched.


If an upgrade is not immediately possible, the following workaround will also succeed:

Open notes.ini with a text editor and add the line ExtMgr_Addins=NLNVP after the line  NAMES=names.nsf

Also delete line NSF_HOOKS= NLNVP.DLL if present.

Or if ExtMgr_Addins= is empty, make sure it is complete as stated above.

Supplemental Materials


Article URL http://www.symantec.com/docs/TECH179128

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