NetworkInterface.GetAllNetworkInterfaces causes Invalid access to memory location
0
I have this piece of code to get a NetworkInterface with a specific name:
string myIf = "Local Area Connection";
NetworkInterface ni = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(i => i.Name == myIf);
However, this throws a NetworkInformationException: Invalid access to memory location with an ErrorCode of 998 (which means exactly the same as the exception says).
System.Net.NetworkInformation.NetworkInformationException was unhandled
ErrorCode=998
HResult=-2147467259
Message=Invalid access to memory location
NativeErrorCode=998
Source=System
StackTrace:
at System.Net.NetworkInformation.SystemNetworkInterface.GetNetworkInterfaces()
at System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
at MyApp.CheckIfNetworkOnline(Object state)
at System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.TimerQueueTimer.CallCallback()
at System.Threading.TimerQueueTimer.Fire()
at System.Threading.TimerQueue.FireNextTimers()
at System.Threading.TimerQueue.AppDomainTimerCallback()
InnerException:
.NET documentation claims that this is due to "A Windows system function call failed" or "when a call to a Win32 function fails".
This is on .NET 4.5.2, the network interface does exist, and the application is already running as Administrator.
What can cause this exception to appear, and is there anything that can be done to fix it?
c# .net winapi network-interface
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
add a comment |
0
I have this piece of code to get a NetworkInterface with a specific name:
string myIf = "Local Area Connection";
NetworkInterface ni = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(i => i.Name == myIf);
However, this throws a NetworkInformationException: Invalid access to memory location with an ErrorCode of 998 (which means exactly the same as the exception says).
System.Net.NetworkInformation.NetworkInformationException was unhandled
ErrorCode=998
HResult=-2147467259
Message=Invalid access to memory location
NativeErrorCode=998
Source=System
StackTrace:
at System.Net.NetworkInformation.SystemNetworkInterface.GetNetworkInterfaces()
at System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
at MyApp.CheckIfNetworkOnline(Object state)
at System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.TimerQueueTimer.CallCallback()
at System.Threading.TimerQueueTimer.Fire()
at System.Threading.TimerQueue.FireNextTimers()
at System.Threading.TimerQueue.AppDomainTimerCallback()
InnerException:
.NET documentation claims that this is due to "A Windows system function call failed" or "when a call to a Win32 function fails".
This is on .NET 4.5.2, the network interface does exist, and the application is already running as Administrator.
What can cause this exception to appear, and is there anything that can be done to fix it?
c# .net winapi network-interface
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
Install LINQPad and see if simply evaluating the expressionNetworkInterface.GetAllNetworkInterfaces()is already problematic. If so, you may have a network driver that isn't playing nice in all circumstances. See ifnetsh interface show interfaceshows anything funky.
– Jeroen Mostert
Jun 2 '17 at 15:20
@ScottChamberlain Done!
– GTHvidsten
Jun 2 '17 at 15:21
If, as your method name suggests, you are merely interested in whether a network is available, you may want to useGetIsNetworkAvailableinstead. You cannot, in general, rely on the appropriate connection being named "Local Area Connection". (On my machine, it's called "Ethernet", but really, it could be anything. All you should care about is that it's not a loopback or tunnel interface and leave the rest to the route table.)
– Jeroen Mostert
Jun 2 '17 at 15:24
@JeroenMostert I can't useGetIsNetworkAvailablebecause there are several network interfaces on this PC, and I need to check if one particular interface is available and up, not if any interface is up.
– GTHvidsten
Jun 2 '17 at 15:35
Error code 998 is very, very nasty. The DllMain entrypoint of an unmanaged DLL failed with an AccessViolationException. Very much a dirty machine problem, so you'd start by trying this on another machine to verify that this only happens on this one. Then it could be useful to unable unmanaged debugging and forcing the debugger to stop on a Win32 exception, helps you identify the specific DLL. Tinkering with the installed anti-malware product tends to be useful.
– Hans Passant
Jun 2 '17 at 15:55
add a comment |
0
0
0
I have this piece of code to get a NetworkInterface with a specific name:
string myIf = "Local Area Connection";
NetworkInterface ni = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(i => i.Name == myIf);
However, this throws a NetworkInformationException: Invalid access to memory location with an ErrorCode of 998 (which means exactly the same as the exception says).
System.Net.NetworkInformation.NetworkInformationException was unhandled
ErrorCode=998
HResult=-2147467259
Message=Invalid access to memory location
NativeErrorCode=998
Source=System
StackTrace:
at System.Net.NetworkInformation.SystemNetworkInterface.GetNetworkInterfaces()
at System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
at MyApp.CheckIfNetworkOnline(Object state)
at System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.TimerQueueTimer.CallCallback()
at System.Threading.TimerQueueTimer.Fire()
at System.Threading.TimerQueue.FireNextTimers()
at System.Threading.TimerQueue.AppDomainTimerCallback()
InnerException:
.NET documentation claims that this is due to "A Windows system function call failed" or "when a call to a Win32 function fails".
This is on .NET 4.5.2, the network interface does exist, and the application is already running as Administrator.
What can cause this exception to appear, and is there anything that can be done to fix it?
c# .net winapi network-interface
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
I have this piece of code to get a NetworkInterface with a specific name:
string myIf = "Local Area Connection";
NetworkInterface ni = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(i => i.Name == myIf);
However, this throws a NetworkInformationException: Invalid access to memory location with an ErrorCode of 998 (which means exactly the same as the exception says).
System.Net.NetworkInformation.NetworkInformationException was unhandled
ErrorCode=998
HResult=-2147467259
Message=Invalid access to memory location
NativeErrorCode=998
Source=System
StackTrace:
at System.Net.NetworkInformation.SystemNetworkInterface.GetNetworkInterfaces()
at System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
at MyApp.CheckIfNetworkOnline(Object state)
at System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.TimerQueueTimer.CallCallback()
at System.Threading.TimerQueueTimer.Fire()
at System.Threading.TimerQueue.FireNextTimers()
at System.Threading.TimerQueue.AppDomainTimerCallback()
InnerException:
.NET documentation claims that this is due to "A Windows system function call failed" or "when a call to a Win32 function fails".
This is on .NET 4.5.2, the network interface does exist, and the application is already running as Administrator.
What can cause this exception to appear, and is there anything that can be done to fix it?
c# .net winapi network-interface
c# .net winapi network-interface
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
edited Jun 2 '17 at 15:21
GTHvidsten
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
asked Jun 2 '17 at 15:13
GTHvidstenGTHvidsten
1,10111034
1,10111034
Install LINQPad and see if simply evaluating the expressionNetworkInterface.GetAllNetworkInterfaces()is already problematic. If so, you may have a network driver that isn't playing nice in all circumstances. See ifnetsh interface show interfaceshows anything funky.
– Jeroen Mostert
Jun 2 '17 at 15:20
@ScottChamberlain Done!
– GTHvidsten
Jun 2 '17 at 15:21
If, as your method name suggests, you are merely interested in whether a network is available, you may want to useGetIsNetworkAvailableinstead. You cannot, in general, rely on the appropriate connection being named "Local Area Connection". (On my machine, it's called "Ethernet", but really, it could be anything. All you should care about is that it's not a loopback or tunnel interface and leave the rest to the route table.)
– Jeroen Mostert
Jun 2 '17 at 15:24
@JeroenMostert I can't useGetIsNetworkAvailablebecause there are several network interfaces on this PC, and I need to check if one particular interface is available and up, not if any interface is up.
– GTHvidsten
Jun 2 '17 at 15:35
Error code 998 is very, very nasty. The DllMain entrypoint of an unmanaged DLL failed with an AccessViolationException. Very much a dirty machine problem, so you'd start by trying this on another machine to verify that this only happens on this one. Then it could be useful to unable unmanaged debugging and forcing the debugger to stop on a Win32 exception, helps you identify the specific DLL. Tinkering with the installed anti-malware product tends to be useful.
– Hans Passant
Jun 2 '17 at 15:55
add a comment |
Install LINQPad and see if simply evaluating the expressionNetworkInterface.GetAllNetworkInterfaces()is already problematic. If so, you may have a network driver that isn't playing nice in all circumstances. See ifnetsh interface show interfaceshows anything funky.
– Jeroen Mostert
Jun 2 '17 at 15:20
@ScottChamberlain Done!
– GTHvidsten
Jun 2 '17 at 15:21
If, as your method name suggests, you are merely interested in whether a network is available, you may want to useGetIsNetworkAvailableinstead. You cannot, in general, rely on the appropriate connection being named "Local Area Connection". (On my machine, it's called "Ethernet", but really, it could be anything. All you should care about is that it's not a loopback or tunnel interface and leave the rest to the route table.)
– Jeroen Mostert
Jun 2 '17 at 15:24
@JeroenMostert I can't useGetIsNetworkAvailablebecause there are several network interfaces on this PC, and I need to check if one particular interface is available and up, not if any interface is up.
– GTHvidsten
Jun 2 '17 at 15:35
Error code 998 is very, very nasty. The DllMain entrypoint of an unmanaged DLL failed with an AccessViolationException. Very much a dirty machine problem, so you'd start by trying this on another machine to verify that this only happens on this one. Then it could be useful to unable unmanaged debugging and forcing the debugger to stop on a Win32 exception, helps you identify the specific DLL. Tinkering with the installed anti-malware product tends to be useful.
– Hans Passant
Jun 2 '17 at 15:55
Install LINQPad and see if simply evaluating the expression
NetworkInterface.GetAllNetworkInterfaces() is already problematic. If so, you may have a network driver that isn't playing nice in all circumstances. See if netsh interface show interface shows anything funky.– Jeroen Mostert
Jun 2 '17 at 15:20
Install LINQPad and see if simply evaluating the expression
NetworkInterface.GetAllNetworkInterfaces() is already problematic. If so, you may have a network driver that isn't playing nice in all circumstances. See if netsh interface show interface shows anything funky.– Jeroen Mostert
Jun 2 '17 at 15:20
@ScottChamberlain Done!
– GTHvidsten
Jun 2 '17 at 15:21
@ScottChamberlain Done!
– GTHvidsten
Jun 2 '17 at 15:21
If, as your method name suggests, you are merely interested in whether a network is available, you may want to use
GetIsNetworkAvailable instead. You cannot, in general, rely on the appropriate connection being named "Local Area Connection". (On my machine, it's called "Ethernet", but really, it could be anything. All you should care about is that it's not a loopback or tunnel interface and leave the rest to the route table.)– Jeroen Mostert
Jun 2 '17 at 15:24
If, as your method name suggests, you are merely interested in whether a network is available, you may want to use
GetIsNetworkAvailable instead. You cannot, in general, rely on the appropriate connection being named "Local Area Connection". (On my machine, it's called "Ethernet", but really, it could be anything. All you should care about is that it's not a loopback or tunnel interface and leave the rest to the route table.)– Jeroen Mostert
Jun 2 '17 at 15:24
@JeroenMostert I can't use
GetIsNetworkAvailable because there are several network interfaces on this PC, and I need to check if one particular interface is available and up, not if any interface is up.– GTHvidsten
Jun 2 '17 at 15:35
@JeroenMostert I can't use
GetIsNetworkAvailable because there are several network interfaces on this PC, and I need to check if one particular interface is available and up, not if any interface is up.– GTHvidsten
Jun 2 '17 at 15:35
Error code 998 is very, very nasty. The DllMain entrypoint of an unmanaged DLL failed with an AccessViolationException. Very much a dirty machine problem, so you'd start by trying this on another machine to verify that this only happens on this one. Then it could be useful to unable unmanaged debugging and forcing the debugger to stop on a Win32 exception, helps you identify the specific DLL. Tinkering with the installed anti-malware product tends to be useful.
– Hans Passant
Jun 2 '17 at 15:55
Error code 998 is very, very nasty. The DllMain entrypoint of an unmanaged DLL failed with an AccessViolationException. Very much a dirty machine problem, so you'd start by trying this on another machine to verify that this only happens on this one. Then it could be useful to unable unmanaged debugging and forcing the debugger to stop on a Win32 exception, helps you identify the specific DLL. Tinkering with the installed anti-malware product tends to be useful.
– Hans Passant
Jun 2 '17 at 15:55
add a comment |
1 Answer
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I had the same issue with my 32-bit site and following steps solved my problem.
- Open IIS
- Expand your machine name on the left
- Select "Application Pools"
- Select the Application Pool of your site
- On the right in the actions select "Advanced Settings"
- In the General Change "Enable 32-Bit Applications" to false and press OK
- On the right in the actions select "Advanced Settings" again.
- In the General Change "Enable 32-Bit Applications" to true and press OK
answered Nov 18 '18 at 5:44
vahidvahid
1364
add a comment |
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I had the same issue with my 32-bit site and following steps solved my problem.
- Open IIS
- Expand your machine name on the left
- Select "Application Pools"
- Select the Application Pool of your site
- On the right in the actions select "Advanced Settings"
- In the General Change "Enable 32-Bit Applications" to false and press OK
- On the right in the actions select "Advanced Settings" again.
- In the General Change "Enable 32-Bit Applications" to true and press OK
answered Nov 18 '18 at 5:44
vahidvahid
1364
add a comment |
0
I had the same issue with my 32-bit site and following steps solved my problem.
- Open IIS
- Expand your machine name on the left
- Select "Application Pools"
- Select the Application Pool of your site
- On the right in the actions select "Advanced Settings"
- In the General Change "Enable 32-Bit Applications" to false and press OK
- On the right in the actions select "Advanced Settings" again.
- In the General Change "Enable 32-Bit Applications" to true and press OK
answered Nov 18 '18 at 5:44
vahidvahid
1364
add a comment |
0
0
0
I had the same issue with my 32-bit site and following steps solved my problem.
- Open IIS
- Expand your machine name on the left
- Select "Application Pools"
- Select the Application Pool of your site
- On the right in the actions select "Advanced Settings"
- In the General Change "Enable 32-Bit Applications" to false and press OK
- On the right in the actions select "Advanced Settings" again.
- In the General Change "Enable 32-Bit Applications" to true and press OK
answered Nov 18 '18 at 5:44
vahidvahid
1364
I had the same issue with my 32-bit site and following steps solved my problem.
- Open IIS
- Expand your machine name on the left
- Select "Application Pools"
- Select the Application Pool of your site
- On the right in the actions select "Advanced Settings"
- In the General Change "Enable 32-Bit Applications" to false and press OK
- On the right in the actions select "Advanced Settings" again.
- In the General Change "Enable 32-Bit Applications" to true and press OK
answered Nov 18 '18 at 5:44
vahidvahid
1364
answered Nov 18 '18 at 5:44
vahidvahid
1364
answered Nov 18 '18 at 5:44
vahidvahid
1364
answered Nov 18 '18 at 5:44
vahidvahid
1364
1364
add a comment |
add a comment |
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Install LINQPad and see if simply evaluating the expression
NetworkInterface.GetAllNetworkInterfaces()is already problematic. If so, you may have a network driver that isn't playing nice in all circumstances. See ifnetsh interface show interfaceshows anything funky.– Jeroen Mostert
Jun 2 '17 at 15:20
@ScottChamberlain Done!
– GTHvidsten
Jun 2 '17 at 15:21
If, as your method name suggests, you are merely interested in whether a network is available, you may want to use
GetIsNetworkAvailableinstead. You cannot, in general, rely on the appropriate connection being named "Local Area Connection". (On my machine, it's called "Ethernet", but really, it could be anything. All you should care about is that it's not a loopback or tunnel interface and leave the rest to the route table.)– Jeroen Mostert
Jun 2 '17 at 15:24
@JeroenMostert I can't use
GetIsNetworkAvailablebecause there are several network interfaces on this PC, and I need to check if one particular interface is available and up, not if any interface is up.– GTHvidsten
Jun 2 '17 at 15:35
Error code 998 is very, very nasty. The DllMain entrypoint of an unmanaged DLL failed with an AccessViolationException. Very much a dirty machine problem, so you'd start by trying this on another machine to verify that this only happens on this one. Then it could be useful to unable unmanaged debugging and forcing the debugger to stop on a Win32 exception, helps you identify the specific DLL. Tinkering with the installed anti-malware product tends to be useful.
– Hans Passant
Jun 2 '17 at 15:55