The source was not found but some or all event logs could not be searched Inaccessible logs Security

Question

I am getting error      The source was not found  but some or all event logs could not be   searched  Inaccessible logs  Security   When I run below code to capture errors on Win 2K12 R2 server IIS 8 5  EventLog elog   new EventLog    EventLog CreateEventSource  MyApp    Application    EventLog WriteEntry Source  swError ToString    EventLogEntryType Error     I ve given full access to HKLM SYSTEM CurrentControlSet services eventlog but it is not working still  What shall I do to fix it

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Whenever you start Visual Studio run it as administrator  It works for me

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I recently started receiving this error inside of my internal NLog failures log  with Visual Studio 2013   The solution has been using NLog v2 0 0 for several years   Within the last month  our main log stopped working   To fix this I updated NLog to the newest version  v3 1 0  via Nuget   The security exception is now gone and ALL of the log messages are appearing again   Additionally  I later found another Security exception and was able to fix it by following the instructions on this post in another thread

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See creating a registry key   This problem can occur not only due to permissions  but also due to event source key missing because it wasn t registered successfully  you need admin privileges to do it - if you just open Visual Studio as usual and run the program normally it won t be enough   Make sure that your event source  MyApp  is actually registered  i e  that it appears in the registry under HKEY LOCAL MACHINE SYSTEM CurrentControlSet services eventlog Application   From MSDN EventLog CreateEventSource        To create an event source in Windows Vista and later or Windows Server   2003  you must have administrative privileges    So you must either run the event source registration code as an admin  also  check if the source already exists before - see the above MSDN example  or you can manually add the key to the registry    create a regkey HKEY LOCAL MACHINE SYSTEM CurrentControlSet services eventlog Application MyApp  inside  create a string value EventMessageFile and set its value to e g  C  Windows Microsoft NET Framework v2 0 50727 EventLogMessages dll

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Locally I run visual studio with admin rights and the error was gone   If you get this error in task scheduler you have to check the option run with high privileges

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Use NetworkService as Identity value in the application pool advanced settings when you are debugging in Visual Studio  ApplicationPoolIdentity is working if you open the site directly from the browser  or go to virtual directory in IIS and use Browse option at right

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try giving AppPool ID or Network Services whichever applicable access HKLM SYSTEM CurrentControlSet services eventlog security also  I was getting the same error    this worked for me  See the error is also saying that the inaccessible logs are Security Logs   I also gave permission in eventlog application    I gave full access everywhere

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I got this error when running Visual Studio   By running Visual Studio as Administrator the application was able to access the Security logs as it then had sufficient permissions  thus preventing the error

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It could also be because  it might not be able to found the  dll file required  Either the file is not in the folder or is renamed  I faced the same issue and found that  dll file was missing in my bin folder some how

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I know  I am a little late to the party     what happen a lot  you just use default settings in your app pool in IIS  In IIS Administration utility  go to app pools- gt select pool-- gt advanced settings- gt Process Model Identity and select a user identity which has right permissions  By default it is set to ApplicationPoolIdentity  If you re developer  you most likely admin on your machine  so you can select your account to run app pool  On the deployment servers  let admins to deal with it

[c#] The source was not found, but some or all event logs could not be searched. Inaccessible logs: Security

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