# Gateway startup fault due to access denied in Module Hook **URL:** \ **Category:** Ignition\ **Created:** [August 5, 2014, 6:10pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859 "2014-08-05T18:10:54Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![rforbes](https://avatars.discourse-cdn.com/v4/letter/r/a88e57/32.png) [@rforbes](https://forum.inductiveautomation.com/u/rforbes)\ **Post date:** [August 5, 2014, 6:10pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/1 "2014-08-05T18:10:54Z")
I just upgraded to 7.7 on 64-bit Windows…I’m having trouble getting the Gateway to restart; it is faulted and I see this in the wrapper.log. Any suggestions? INFO | jvm 1 | 2014/08/05 11:52:07 | INFO [ModuleManager] [11:52:07,535]: Setting up modules INFO [ModuleHook] [11:52:20,124]: JNI Library: C:\Windows\TEMP\jniwrap-3.8.3304715667401831135.Build.3.8.31966291242\jniwrap64.dll INFO | jvm 1 | 2014/08/05 11:52:20 | ERROR [SRContext] [11:52:20,156]: Error during context startup. INFO | jvm 1 | 2014/08/05 11:52:20 | java.lang.ExceptionInInitializerError INFO | jvm 1 | 2014/08/05 11:52:20 | at com.jniwrapper.win32.system.Kernel32.isUnicode(Kernel32.java:77) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.jniwrapper.win32.FunctionName.(FunctionName.java:24) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.jniwrapper.win32.MessageLoopThread.(MessageLoopThread.java:24) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.opccom.ModuleHook.setup(ModuleHook.java:176) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.modules.ModuleManagerImpl$LoadedModule.setup(ModuleManagerImpl.java:2189) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.modules.ModuleManagerImpl.setup(ModuleManagerImpl.java:265) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.SRContext.startupInternal(SRContext.java:1169) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.redundancy.RedundancyManagerImpl.startup(RedundancyManagerImpl.java:194) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.SRContext.asyncInit(SRContext.java:917) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.SRContext.access$200(SRContext.java:249) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.gateway.SRContext$2.run(SRContext.java:651) INFO | jvm 1 | 2014/08/05 11:52:20 | at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:526) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.util.concurrent.FutureTask.run(FutureTask.java:266) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) INFO | jvm 1 | 2014/08/05 11:52:20 | at java.lang.Thread.run(Thread.java:745) INFO | jvm 1 | 2014/08/05 11:52:20 | Caused by: com.jniwrapper.JNIWrapperException: java.io.IOException: Access is denied INFO | jvm 1 | 2014/08/05 11:52:20 | Caused by: java.io.IOException: Access is denied INFO | jvm 1 | 2014/08/05 11:52:20 | INFO [SRContext] [11:52:20,171]: Ignition["/main", state=STARTING] ContextState = FAULTED ---
**Author:** ![Duffanator](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/duffanator/32/3560_2.png) [@Duffanator](https://forum.inductiveautomation.com/u/Duffanator)\ **Post date:** [August 5, 2014, 6:14pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/2 "2014-08-05T18:14:23Z")
Did you upgrade Java to version 8? ---
**Author:** ![rforbes](https://avatars.discourse-cdn.com/v4/letter/r/a88e57/32.png) [@rforbes](https://forum.inductiveautomation.com/u/rforbes)\ **Post date:** [August 8, 2014, 5:52pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/3 "2014-08-08T17:52:14Z")
Yes, I upgraded to 1.8. This is getting to be quite a problem; I can’t get the Gateway to come up at all now. This is on 64-bit Windows 7. java version info as follows: $ java -version java version “1.8.0\_11” Java™ SE Runtime Environment (build 1.8.0\_11-b12) Java HotSpot™ 64-Bit Server VM (build 25.11-b03, mixed mode) Rob ---
**Author:** ![rforbes](https://avatars.discourse-cdn.com/v4/letter/r/a88e57/32.png) [@rforbes](https://forum.inductiveautomation.com/u/rforbes)\ **Post date:** [August 8, 2014, 5:54pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/4 "2014-08-08T17:54:08Z")
…wrapper log attached… [wrapper.log](https://us1.discourse-cdn.com/inductiveautomation/original/2X/0/0d6f8cdd24f11042096883433aba77071a6149b9.log) (67.7 KB) ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 8, 2014, 6:05pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/5 "2014-08-08T18:05:12Z")
Are you sure these are the right logs? They actually show the gateway starting up the second time… The following: ```auto INFO | jvm 1 | 2014/08/08 11:48:32 | INFO [ActivateSessionService] [11:48:32,132]: User "opcuauser" connected but could not authenticate. (invalid username or password) INFO | jvm 1 | 2014/08/08 11:48:32 | WARN [ActivateSessionService] [11:48:32,132]: Returning ServiceFault for request: com.inductiveautomation.opcua.types.messages.ActivateSessionRequest@238167dd. StatusCode=StatusCode[Severity=Bad, Subcode=Bad_UserAccessDenied] ``` is the OPC-UA connection failing to authenticate, which is weird, but wouldn’t stop the gateway from starting. ---
**Author:** ![Colby.Clegg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/colby.clegg/32/3282_2.png) [@Colby.Clegg](https://forum.inductiveautomation.com/u/Colby.Clegg)\ **Post date:** [August 11, 2014, 6:56pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/6 "2014-08-11T18:56:57Z")
Hi, Based on what I read, my _guess_ is that it’s potentially something about the way the temp files are generated/named… there have been various issues in the past that have been fixed in Java with symptoms like this, and then I’ve found other discussions from the particular library vendor talking about them fixing issues, maybe something regressed in Java 7 or 8? Anyhow, in reading around, one possible cause is if the new temp file name clashes with an existing file. This is supposed to be unlikely, since the files are generated with random numbers. But if this problem is so reproducible for you, maybe we can help narrow down when & why it’s happening. When you get the error, try the following: 1. Stop the Ignition service. 2. Go to C:\windows\temp and delete all of the folders that start with “jniwrap-\*”. 3. Start again, see if the error occurs. Try restarting a few times if you want. If it keeps happening after this, or happens after a short period, maybe we can look at other causes. Regards, ---
**Author:** ![nmudge](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nmudge/32/3394_2.png) [@nmudge](https://forum.inductiveautomation.com/u/nmudge)\ **Post date:** [September 27, 2014, 2:49pm UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/7 "2014-09-27T14:49:24Z")
I had the same problem. I followed Colby’s instructions to get it to work. After deleting temp files and restarting a few times it worked. ---
**Author:** ![bneagu](https://avatars.discourse-cdn.com/v4/letter/b/50afbb/32.png) [@bneagu](https://forum.inductiveautomation.com/u/bneagu)\ **Post date:** [December 17, 2014, 1:45am UTC](https://forum.inductiveautomation.com/t/gateway-startup-fault-due-to-access-denied-in-module-hook/8859/8 "2014-12-17T01:45:41Z")
Deleting the c:\windows\temp files helped me also to start the gateway. However, I did not find folders that start with "jniwrap-\*". OS: Windows 7 Home Premium, Built 7601 > java -version > java version "1.8.0\_25" > Java(TM) SE Runtime Environment (build 1.8.0\_25-b18) > Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode) Ignition 64 bits, v7.7.1