ErrLookup › dotnet/runtime
dotnet/runtime
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps. · C# · 20,856 source files
Analyzed at 60108ba66e on 2026-08-10. 203 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Precise stack mark not supported - disabling.\n | console | warning | mono, sgen, gc, stack-marking, configuration, environment-variable |
| icall symbol maps not enabled, pass… | console | critical | mono, icall, build-configuration, debugging, profiling, abort |
| Cannot call synchronous C# method from inside a synchronous… | exception | error | threading, interop, reentrancy, deadlock-prevention |
| Expected to be a function | exception | critical | wasm-imports, emscripten, linker, startup |
| NotImplementedException: Span | exception | error | marshaling, span, type-mismatch, interop |
| : Error processing event : (ID ): This file must contain… | exception | error | etw, manifest, eventing, coreclr, exclusion-list |
| max-heap-size must be an integer.\n | validation | error | mono, gc, boehm-gc, configuration, environment-variable, startup |
| NotImplementedException | exception | critical | marshaler, memory-view, internal-error, typescript |
| Problem waiting for createdump: waitpid() FAILED result | console | error | coreclr, createdump, crash-dump, waitpid, signals, linux, diagnostics |
| No baseline JIT found | exception | error | azure-storage, jit, rolling-build, coreclr, superpmi, network |
| NotImplementedException: bigint | exception | error | marshaling, bigint, type-mismatch, interop |
| NotImplementedException: ArraySegment. For more information… | exception | error | marshaling, arraysegment, type-mismatch, interop |
| Problem writing to createdump parent_write_pipe | console | error | coreclr, createdump, crash-dump, pipes, ptrace, linux, diagnostics |
ERR22 ERR22: WebSocket receive expected ArrayBuffer | exception | error | dotnet-wasm, websocket, network, typescript, binary |
| Warning: Could not open bridge dump file | console | warning | mono, sgen, bridge-processing, gc, debugging, filesystem, configuration |
| URLSearchParams is supported | exception | error | environment, browser-support, polyfill, configuration |
| NotImplementedException | exception | error | dotnet-wasm, jsinterop, marshaling, typescript, not-implemented |
| cwrap not found or not a function | exception | error | cwraps, emscripten, wasm-exports, linker, runtime |
| NotImplementedException: ArraySegment. | exception | error | jsinterop, marshaling, arraysegment, not-implemented |
| Unsupported Webcil version | exception | critical | webcil, wasm, runtime-host, version-mismatch, corerun |
| JSObject proxy is not supported for | exception | error | marshaling, type-mismatch, function, interop |
| Locale or culture name is null or empty. localeName= | exception | error | globalization, locale, interop, icu |
| Unexpected behavior of asset | exception | error | configuration, assets, startup, config |
| Invalid Debian version format | validation | error | debian, packaging, versioning, rootfs, validation |
| Couldn't create git diff | exception | error | git, asmdiff, subprocess, superpmi |
| Unhandled case for MarshalAction | console | error | mono, marshal, handleref, ilgen, internal, enum, unhandled-case |
| NotImplementedException: TypedArray | exception | error | marshaling, typedarray, type-mismatch, interop |
| Cannot call synchronous C# methods. | exception | error | threading, interop, ui-thread, deadlock-prevention, configuration |
| OperationCanceledException | exception | warning | http, cancellation, streaming, abort, fetch |
| NotImplementedException | exception | error | marshaling, type-mismatch, managed-proxy, interop |
| Unrecognized asset behavior | exception | error | assets, configuration, runtime, loader, typescript |
| Error, unclean replay. | exception | error | superpmi, replay, verification, jit, collection |
| Using node without crypto support. To enable current… | exception | error | node, crypto, polyfill, environment |
| Error, toc file not created correctly at | exception | error | superpmi, mcs, toc, collection, mch |
| Couldn't determine list of JIT changes starting with… | exception | error | git, base-jit, git-log, subprocess, superpmi, asmdiff |
| Mismatched git hashes between loader and runtime. Loader | exception | critical | dotnet-wasm, build-consistency, version-mismatch, loader, critical |
| Please install `ws` npm package to enable networking… | exception | error | network, node, websocket, dependencies |
| ctf_sequence needs to have its memory expilicitly laid out | exception | error | lttng, etw, manifest, eventing, coreclr, ctf |
| mono/marshal: SafeHandles missing MANAGED_CONV_IN\n | console | warning | mono, marshal, safehandle, reverse-pinvoke, interop, ilgen |
| No active JS diagnostic session | exception | error | diagnostics, gcdump, session, startup |
| Invalid jsThreadBlockingMode | exception | error | configuration, threading, validation, enum |
| .NET runtime has failed to start, because too much memory… | exception | critical | memory, startup, wasm, emscripten, mobile |
| SHA256 mismatch for : expected , got | exception | error | dotnet-rootfs, debian, sha256, gpg, integrity, python |
| must be marked with 'BlazorWebAssemblyLazyLoad' item group… | exception | error | blazor, configuration, lazy-loading, msbuild |
| Missing JIT | exception | error | jit-rolling-build, upload, build-artifacts, python |
| Error: Fail to PAL_Initialize\n | console | critical | superpmi, mcs, pal, initialization, unix, developer-tool |
| Failed to load ICU data | exception | critical | icu, globalization, native, corruption, startup |
| Module.ready couldn't be redefined. | exception | error | configuration, emscripten, startup, api-misuse |
| Failed on mono_wasm_send_dbg_command_with_parms | exception | error | debugger, debug-protocol, chrome-devtools, diagnostics |
| invariant globalization mode is inactive and no ICU data… | exception | critical | icu, globalization, configuration, startup |
| not implemented | exception | error | marshaling, array, type-mismatch, interop |
| Implicit conversion of roots to pointers is no longer… | exception | error | gc-roots, api-change, valueof, typescript, migration |
| BrowserHttpWriteStream.Rejected | exception | error | http, streaming, upload, transform-stream, network |
| Locale info for locale= | exception | error | globalization, icu, locale, displaynames |
| Error: Fail to PAL_InitializeDLL\n | console | critical | superpmi, shim-collector, pal, dllmain, initialization, unix, jit |
| External roots are not supported in multithreaded mode | exception | error | gc-roots, threading, multithreaded, unsupported-api |
| __stack_pointer was not preserved by the linker or optimizer | exception | critical | webcil, r2r, linker, build |
| Failed to load WebAssembly module. HTTP status | exception | critical | network, wasm, http, deployment |
| method instrumentation is not enabled, please enable it… | exception | error | diagnostics, profiler, msbuild, instrumentation |
| __coreclr_wasm_rtlrestorecontext_tag was not preserved by… | exception | critical | webcil, r2r, linker, exceptions, build |
| Unknown object id | exception | error | debugger, object-cache, cdp, lifecycle |
| not found while looking up | exception | error | jsimport, interop, namespace, binding |
| socket() failed: \n | console | error | mono, debugger-agent, socket, network, ipv6, file-descriptors |
| Webcil asset ' ' is missing payloadSize in the boot config. | exception | critical | webcil, boot-config, configuration |
| {coreclr_args.mode} | exception | error | dotnet, coreclr, superpmi, cli-args, configuration |
| event must be an object, but got | validation | error | debugger, validation, typescript, debug-protocol |
| No assemblies have been marked as lazy-loadable. Use the… | exception | error | blazor, lazy-loading, assembly-loading, configuration |
| No JIT changes found starting with baseline hash | exception | warning | git, jit, rolling-build, coreclr, superpmi |
| Couldn't determine baseline git hash | exception | error | git, base-jit, merge-base, subprocess, superpmi, asmdiff |
| Failed to load resource | exception | error | network, fetch, cors, loader |
| NotImplementedException | exception | error | marshaling, span, arraysegment, type-mismatch, interop |
| Out of memory | exception | critical | memory, out-of-memory, native-heap, marshaler |
| Error | exception | error | jit-rolling-build, upload, build-artifacts, argument-validation, python |
| External roots are not supported when threads are enabled | exception | error | gc-roots, threading, multithreaded, unsupported-api |
| Couldn't determine newest 'main' git hash | exception | error | git, base-jit, subprocess, network, superpmi, asmdiff |
| Mismatched git hashes between loader and runtime. Loader | exception | critical | git-hash, build-integrity, diagnostics, version-mismatch |
| Please install `node-fetch` and `node-abort-controller` npm… | exception | error | node, http, fetch, polyfill, abort-controller |
| Can't use moduleFactory callback of createDotnetRuntime… | exception | error | api-misuse, configuration, typescript, startup |
| Locale info for locale= | exception | error | globalization, marshalling, buffer-overflow, locale |
| Couldn't determine current git hash | exception | error | git, base-jit, subprocess, superpmi, asmdiff |
| Don't know size for | exception | error | etw, manifest, eventing, coreclr, type-mapping |
| Invalid config, resources is not set | exception | error | configuration, loader, startup, resources |
| Invalid summary_type | validation | error | summary, validation, configuration, superpmi, valueerror |
| Pass only one tiering option. | exception | error | dotnet, coreclr, superpmi, benchmarks, jit, configuration |
| posix_memalign failed | exception | critical | memory, assembly-loading, native |
| Core_Root not set properly | exception | error | core-root, coredistools, superpmi, configuration, asmdiff |
| Invalid runtime config, cannot initialize the runtime. | exception | critical | configuration, boot-config, initialization |
| ContinuousIntegrationBuild environment variable is not… | exception | error | dotnet-wasm, build, rollup, environment-variables, config |
| execv( ) failed: \n | console | error | superpmi, parallelsuperpmi, execv, fork, enoent, unix |
| Signature verification failed | exception | error | dotnet-rootfs, debian, gpg, signature, security, python |
| Unable to find MinGit asset for arch | exception | error | dotnet, coreclr, superpmi, windows, git, network |
| Unknown host os | exception | error | host-os, coredistools, platform, superpmi, asmdiff |
| :No ClrInstanceID field of type win:UInt16 for event symbol | exception | error | etw, manifest, eventing, coreclr, validation |
| BEGIN: coreclr_initialize failed - Error: 0x%08x | console | critical | coreclr, corerun, runtime-initialization, host |
| Failed to initialize ICU data | exception | critical | icu, globalization, data-corruption, native |
| Loader configuration error: 'resources.coreAssembly' is… | exception | error | configuration, loader, publish, msbuild |
| Mismatched git hashes between loader and runtime. Loader | exception | critical | git-hash, build-integrity, interop, version-mismatch |
| %s | console | error | dotnet, coreclr, corerun, native-host, runtime |
| Mismatched git hashes between loader and runtime. Loader | exception | critical | version, build, loader, configuration |
| max-heap-size must be at least %dMb.\n | validation | critical | mono, boehm-gc, gc, configuration, environment-variable, startup |