title: PolicyException: Required permissions cannot be acquired — what does this error mean
body: <p>Got this error when trying to load an aspx page:</p>
  
  <pre><code>Source Error:
  
  An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
  
  Stack Trace:
  
  [PolicyException: Required permissions cannot be acquired.]
     System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet&amp; denied, Boolean checkExecutionPermission) +2770052
     System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet&amp; denied, Int32&amp; securitySpecialFlags, Boolean checkExecutionPermission) +57
  
  [FileLoadException: Could not load file or assembly 'SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)]
     System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark&amp; stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
     System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark&amp; stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +54
     System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark&amp; stackMark, Boolean forIntrospection) +211
     System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark&amp; stackMark, Boolean forIntrospection) +141
     System.Reflection.Assembly.Load(String assemblyString) +25
     System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +32
  
  [ConfigurationErrorsException: Could not load file or assembly 'SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)]
     System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +596
     System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +211
     System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +46
     System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +177
     System.Web.Compilation.BuildProvidersCompiler..ctor(VirtualPath configPath, Boolean supportLocalization, String outputAssemblyName) +185
     System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) +230
     System.Web.Compilation.BuildManager.CompileGlobalAsax() +49
     System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +462
  
  [HttpException (0x80004005): Could not load file or assembly 'SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)]
     System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() +57
     System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +612
     System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) +644
  
  [HttpException (0x80004005): Could not load file or assembly 'SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)]
     System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +3465427
     System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +69
     System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +279
  </code></pre>