ErrLookup › dotnet/runtime
dotnet/runtime
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps. · C# · 20,854 source files
Analyzed at 290d5ab72c on 2026-08-06. 223 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Unrecognized asset behavior:${asset.behavior}, for asset ${a | exception | error | configuration, asset-loading, boot-config, startup |
| Failed on mono_wasm_send_dbg_command_with_parms | exception | error | debugger, native-interop, cdp, devtools |
| Failed on mono_wasm_send_dbg_command | exception | error | debugger, native-interop, cdp, devtools |
| Failed on mono_wasm_get_dbg_command_info | exception | error | debugger, native-interop, initialization, handshake |
| event must be an object, but got ${JSON.stringify(event)} | validation | error | debugger, type-error, events, contracts |
| event.eventName is a required parameter, in event: ${JSON.st | validation | error | debugger, events, contracts, validation |
| args must be an object, but got ${JSON.stringify(args)} | validation | error | debugger, events, contracts, type-error |
| "arguments" should be an array, but was ${request.arguments} | validation | error | debugger, cdp, contracts, validation |
| Unknown object id ${objId} | exception | error | debugger, cdp, object-cache, devtools |
| Could not find any object with id ${objectId} | exception | error | debugger, cdp, object-cache, devtools |
| No active session to reconnect | exception | error | diagnostics, dsrouter, ordering, session |
| No active JS diagnostic session | exception | error | diagnostics, dotnet-counters, session, ordering |
| No active JS diagnostic session | exception | error | diagnostics, dotnet-cpu-profiler, session, ordering |
| method instrumentation is not enabled, please enable it with | exception | error | diagnostics, dotnet-cpu-profiler, msbuild, configuration |
| No active JS diagnostic session | exception | error | diagnostics, dotnet-gcdump, session, ordering |
| GC is already locked | exception | error | gc, locking, concurrency, api-misuse |
| GC lock only supported in main thread | exception | error | gc, locking, threads, pthread |
| GC is not locked | exception | error | gc, locking, concurrency, api-misuse |
| Locale or culture name is null or empty. localeName=${locale | exception | error | globalization, locale, icu, configuration |
| Locale info for locale=${localeName} is null or empty. | exception | error | globalization, icu, locale, intl |
| Locale info for locale=${localeName} exceeds length of ${dst | exception | error | globalization, icu, locale, buffer |
| Please install `node-fetch` and `node-abort-controller` npm | exception | error | network, node, fetch, http, environment |
| This browser doesn't support fetch API. Please use a modern | exception | error | network, browser, fetch, http, environment |
| BrowserHttpWriteStream.Rejected | exception | error | network, http, streaming, fetch |
| OperationCanceledException | exception | error | network, http, streaming, cancellation |
| Failed to load ICU data | exception | critical | globalization, icu, native, startup |
| ${part} not found while looking up ${function_name} | exception | error | jsimport, interop, module-resolution |
| ${function_name} must be a Function but was ${typeof fn} | exception | error | jsimport, interop, types |
| No assemblies have been marked as lazy-loadable. Use the 'Bl | exception | error | blazor, lazy-loading, assembly, config |
| ${assemblyNameToLoad} must be marked with 'BlazorWebAssembly | exception | error | blazor, lazy-loading, assembly, config |
| Unexpected behavior ${asset.behavior} of asset ${asset.name} | exception | error | config, assets, startup, deprecated |
| NodeJS at '${process.execPath}' has too low version '${proce | exception | error | node, environment, startup, version |
| NotImplementedException | exception | error | node, fetch, polyfill, filesystem |
| No fetch implementation available | exception | critical | fetch, environment, startup, polyfill |
| Missing window to the query parameters from | exception | error | startup, environment, config, node, worker |
| URLSearchParams is supported | exception | error | startup, environment, browser, config |
| Module.ready couldn't be redefined. | exception | error | startup, config, emscripten, host |
| Can't use moduleFactory callback of createDotnetRuntime func | exception | error | startup, config, host, api-usage |
| .NET runtime has failed to start, because too much memory wa | exception | critical | wasm, memory, startup, configuration, emscripten |
| invariant globalization mode is inactive and no ICU data arc | exception | error | globalization, icu, configuration, startup |
| Cannot call synchronous C# methods. | exception | error | threading, interop, synchronization |
| Cannot call synchronous C# method from inside a synchronous | exception | error | threading, interop, reentrancy, deadlock |
| Invalid jsThreadBlockingMode | exception | error | configuration, threading, startup |
| NotImplementedException: bigint | exception | error | marshaling, interop, types, bigint |
| NotImplementedException: TypedArray | exception | error | marshaling, interop, types, typedarray |
| NotImplementedException: Span | exception | error | marshaling, interop, span |
| JSObject proxy is not supported for ${js_type} ${value} | exception | error | marshaling, interop, types, symbol, function |
| NotImplementedException: ArraySegment. For more information | exception | error | marshaling, interop, arraysegment |
| NotImplementedException ${js_type}. For more information see | exception | error | marshaling, interop, versioning |
| NotImplementedException ${element_type} | exception | error | marshaling, interop, span, arraysegment, typedarray |
| NotImplementedException ${element_type}. For more informatio | exception | error | marshaling, interop, array |
| value was not an integer | exception | error | memory, types, integer, i52 |
| value out of range | exception | error | memory, types, integer, overflow, i52 |
| Out of memory | exception | critical | memory, wasm, allocation, oom |
| Loader configuration error: 'mainAssemblyName' is required. | validation | error | config, validation, startup, loader |
| Loader configuration error: 'resources.coreAssembly' is requ | validation | error | config, validation, startup, loader, assemblies |
| Invalid config, resources is not set | validation | error | config, assets, js-module, url, loader |
| Failed to invoke 'onRuntimeConfigLoaded' on library initiali | exception | error | library-initializer, plugin, runtime, config, startup |
| Failed to invoke 'onRuntimeReady' on library initializer '${ | exception | error | library-initializer, plugin, runtime, startup |
| No assemblies have been marked as lazy-loadable. Use the 'Bl | validation | error | blazor, lazy-loading, config, assemblies |
| ${assemblyNameToLoad} must be marked with 'BlazorWebAssembly | validation | error | blazor, lazy-loading, config, assemblies |
| Failed to load resource '${asset.name}' from '${asset.resolv | exception | error | network, fetch, assets, cors, integrity |
| Failed to load resource '${asset.name}' from '${asset.resolv | exception | error | network, http, assets, server, deployment |
| Failed to load resource '${asset.name}' from '${asset.resolv | exception | error | network, http, retry, transient, rate-limiting |
| Missing window to the query parameters from | validation | error | environment, browser, node, arguments, config |
| URLSearchParams is supported | validation | error | environment, polyfill, browser, arguments, config |
| Using node without crypto support. To enable current operati | exception | critical | node, crypto, polyfill, environment, runtime |
| No fetch implementation available | exception | critical | network, fetch, environment, polyfill, runtime |
| Invalid config, resources is not set | validation | error | config, validation, startup, loader, runtime |
| Unsupported Webcil version: ${webcilVersion} | validation | critical | webcil, version, wasm, compatibility, deployment |
| Failed to initialize ICU data | exception | error | icu, globalization, wasm, initialization, assets |
| Failed to load WebAssembly module. HTTP status: ${res?.statu | exception | critical | wasm, network, http, deployment, assets |
| Mismatched git hashes between loader and runtime. Loader: ${ | validation | error | version-mismatch, cache, deployment, initialization |
| Invalid runtime config, cannot initialize the runtime. | validation | critical | configuration, initialization, wasm, validation |
| WebSockets are not supported in shell JS engine. | exception | error | websocket, environment, shell, networking |
| Please install `ws` npm package to enable networking support | exception | error | websocket, nodejs, dependencies, networking |
| This browser doesn't support WebSocket API. Please use a mod | exception | error | websocket, browser-support, environment, networking |
| Runtime is not running | validation | error | diagnostics, runtime-lifecycle, ordering |
| startup diagnostic client already registered | validation | error | diagnostics, startup, singleton |
| multiple clients in parallel are not allowed | validation | error | diagnostics, concurrency, singleton |
| No active session to reconnect | validation | error | diagnostics, dsrouter, session, ordering |
| No active JS diagnostic session | validation | error | diagnostics, counters, session, ordering |
| No active JS diagnostic session | validation | error | diagnostics, profiling, session, ordering |
| method instrumentation is not enabled, please enable it with | validation | error | diagnostics, profiling, msbuild, configuration |
| No active JS diagnostic session | validation | error | diagnostics, gcdump, session, ordering |
| Expected internals to be an array | exception | critical | initialization, internals, contract, version-mismatch |
| Expected internals to have RuntimeAPI | exception | critical | initialization, internals, contract, ordering |
| Mismatched git hashes between loader and runtime. Loader: ${ | exception | error | version-mismatch, cache, deployment, diagnostics |
| Native module already loaded | exception | error | initialization, singleton, lifecycle |
| Expected internals to be an array | exception | critical | initialization, internals, contract, version-mismatch |
| Expected internals to have RuntimeAPI | exception | critical | initialization, runtime-interop, internals |
| Locale or culture name is null or empty. localeName=${locale | exception | error | globalization, locale, icu, intl |
| Locale info for locale=${localeName} is null or empty. | exception | error | globalization, intl-displaynames, locale |
| Locale info for locale=${localeName} exceeds length of ${dst | exception | error | globalization, buffer-overflow, locale |
| Expected internals to be an array | exception | critical | initialization, internals, runtime-interop |
| Expected internals to have RuntimeAPI | exception | critical | initialization, runtime-interop, internals |
| Mismatched git hashes between loader and runtime. Loader: ${ | exception | critical | version-mismatch, build, deployment |
| Expected internals to be an array | exception | critical | initialization, internals, runtime-interop |
| Expected internals to have RuntimeAPI | exception | critical | initialization, runtime-interop, internals |
| Mismatched git hashes between loader and runtime. Loader: ${ | exception | critical | version-mismatch, build, deployment |
| Please install `node-fetch` and `node-abort-controller` npm | exception | error | http, node-js, polyfill, fetch |
| This browser doesn't support fetch API. Please use a modern | exception | error | http, browser-support, fetch, compatibility |
| BrowserHttpWriteStream.Rejected | exception | error | http, streaming, upload, network |
| OperationCanceledException | exception | warning | http, streaming, cancellation, abort |
| Expected internals to be an array | exception | critical | initialization, internals, runtime-interop |
| Expected internals to have RuntimeAPI | exception | critical | initialization, runtime-interop, internals |
| Mismatched git hashes between loader and runtime. Loader: ${ | exception | critical | version-mismatch, build, deployment |
| ${part} not found while looking up ${functionName} | exception | error | jsimport, interop, module-resolution |
| ${functionName} must be a Function but was ${typeof fn} | exception | error | jsimport, interop, function-lookup, typescript |
| NotImplementedException: bigint | exception | error | marshaling, bigint, interop, type-mismatch |
| NotImplementedException: TypedArray | exception | error | marshaling, typedarray, interop, type-mismatch |
| NotImplementedException: Span | exception | error | marshaling, span, interop, type-mismatch |
| JSObject proxy is not supported for ${jsType} ${value} | exception | error | marshaling, jsobject, interop, type-mismatch, function |
| NotImplementedException: ArraySegment. For more information | exception | error | marshaling, arraysegment, interop, type-mismatch |
| NotImplementedException ${jsType}. For more information see | exception | error | marshaling, managed-proxy, interop, version-mismatch |
| not implemented | exception | error | marshaling, array, interop, element-type |
| NotImplementedException ${elementType} | exception | error | marshaling, span, element-type, interop |
| NotImplementedException ${elementType}. For more information | exception | error | marshaling, array, element-type, interop, csharp-to-js |
| NotImplementedException | exception | error | marshaling, span, invariant, version-mismatch, internal |
| Expected a controllable promise. | exception | error | promise, task, cancellation, invariant, internal |
| WebSockets are not supported in shell JS engine. | exception | error | websocket, environment, shell, network |
| Please install `ws` npm package to enable networking support | exception | error | websocket, node, environment, network, dependencies |
| This browser doesn't support WebSocket API. Please use a mod | exception | error | websocket, browser, environment, compatibility, network |
| Expected internals to be an array | exception | critical | initialization, loader, version-mismatch, internal |
| Expected internals to have RuntimeAPI | exception | critical | initialization, loader, runtime-api, version-mismatch, internal |
| Mismatched git hashes between loader and runtime. Loader: ${ | exception | critical | initialization, version-mismatch, loader, build-integrity, critical |
| no such ctf intrinsic called: {ctf_type} | exception | error | code-generation, lttng, tracing, build-time, manifest |
| {eventNode} event does not have a symbol | exception | error | code-generation, lttng, tracing, manifest, xml, validation |
| Couldn't determine current git hash | exception | error | git, jitrollingbuild, infrastructure, environment |
| Couldn't determine newest 'main' git hash | exception | error | git, jitrollingbuild, infrastructure, environment, remote |
| Couldn't determine baseline git hash | exception | error | git, jitrollingbuild, infrastructure, shallow-clone, merge-base |
| Couldn't determine list of JIT changes starting with baselin | exception | error | git, jitrollingbuild, infrastructure, shallow-clone, git-log |
| No JIT changes found starting with baseline hash | exception | error | git, jitrollingbuild, infrastructure, baseline, no-jit-changes |
| No baseline JIT found | exception | error | azure-storage, jitrollingbuild, infrastructure, network, baseline |
| Missing JIT | exception | error | jitrollingbuild, build, file-not-found, upload, product-location |
| Unknown OS. | exception | error | jitrollingbuild, os-detection, validation, upload |
| Missing azure storage or identity packages. | exception | error | azure, dependencies, python-packages, jitrollingbuild, upload |
| Error | exception | error | jitrollingbuild, build, validation, upload, directory-not-found |
| Unknown target OS. | exception | error | jitutil, cross-compile, validation, os-detection |
| Unknown host OS. | exception | error | jitutil, validation, os-detection, file-extension |
| Missing Azure Storage package. | exception | error | azure, dependencies, python-packages, jitutil |
| Azure failed to download | exception | error | azure, download, network, authentication, jitutil |
| Unsupported OS. | exception | error | superpmi, validation, os-detection, collect, shim |
| Tiering options have no effect for pmi or crossgen2 collecti | exception | error | superpmi, validation, tiering, pmi, crossgen2, collect |
| Tiering options have no effect for nativeaot collections. | exception | error | superpmi, validation, tiering, nativeaot, collect |
| Pass only one tiering option. | exception | error | config, args, superpmi, tiering |
| Expected a '.ilc.rsp' file for nativeaot, but got {original_ | exception | error | nativeaot, args, file-io, superpmi |
| Unable to find input file in {original_rsp_filepath} | exception | error | nativeaot, file-io, superpmi |
| No .mc files generated. | exception | error | collection, superpmi, diagnostics, file-io |
| MCH file failed to be generated at: %s | exception | error | mch, merge, superpmi, diagnostics |
| Final mch file failed to be generated. | exception | error | mch, clean, superpmi, diagnostics |
| Error, toc file not created correctly at: %s | exception | error | mch, toc, superpmi, diagnostics |
| Error, unclean replay. | exception | error | mch, replay, clean, superpmi, diagnostics |
| Couldn't create git diff | exception | error | asmdiffs, git, subprocess, superpmi |
| Core_Root not set properly | exception | error | core-root, config, superpmi, asmdiffs |
| Unknown host os: {} | exception | error | os, coredistools, config, superpmi |
| PMI not found at {} | exception | error | pmi, config, file-io, superpmi |
| Tool {tool_name} not found. Have you built the runtime repo | exception | error | tooling, build, config, superpmi |
| Unknown OS. | exception | error | os, tooling, superpmi |
| Invalid summary_type: {coreclr_args.summary_type} | exception | error | config, args, summary, superpmi |
| Specified -base_jit_path does not point to a file | exception | error | config, args, asmdiffs, superpmi |
| Couldn't determine current git hash | exception | error | git, environment, superpmi, configuration |
| Couldn't determine newest 'main' git hash | exception | error | git, superpmi, environment |
| Couldn't determine baseline git hash | exception | error | git, superpmi, shallow-clone |
| Couldn't determine list of JIT changes starting with baselin | exception | error | git, superpmi, shallow-clone |
| No JIT changes found starting with baseline hash | exception | error | git, superpmi, configuration |
| No baseline JIT found | exception | error | azure-storage, network, superpmi, caching |
| {} not found | exception | error | azure-storage, network, superpmi, pintools, caching |
| Unknown OS. | exception | error | cross-platform, configuration, aspnet, superpmi |
| Invalid OS for x64. | exception | error | cross-platform, configuration, aspnet, benchmarks |
| Invalid OS for arm64. | exception | error | cross-platform, configuration, aspnet, arm64, benchmarks |
| Invalid arch. | exception | error | cross-platform, configuration, aspnet, benchmarks |
| Unable to find MinGit asset for arch '{arch}'. Available ass | exception | error | windows, helix, network, aspnet, superpmi |
| Pass only one tiering option. | exception | error | configuration, benchmarks, superpmi, jit |
| Collection 'smoke_tests' is only available for 'nativeaot' c | exception | error | configuration, nativeaot, superpmi, validation |
| Cannot find System.Private.CoreLib.dll at {corelib_src} | exception | error | configuration, nativeaot, superpmi, paths |
| Could not determine JIT-EE version | exception | error | build, mcs, superpmi, configuration |
| Didn't find any collections using %s | exception | error | network, azure-storage, superpmi, proxy |
| Comparison failed for the following files(s): {} | exception | error | filesystem, permissions, utilities, windows-lock |
| Invalid Entry {line}in {exclusion_filename} | exception | error | configuration, parsing, utilities, validation |
| Invalid Entry {line}in {inclusion_filename} | exception | error | configuration, parsing, utilities, validation |
| Export '%s' not found. | console | critical | coreclr, corerun, runtime-host, symbol-resolution, version-skew |
| BEGIN: coreclr_initialize failed - Error: 0x%08x | console | critical | coreclr, corerun, runtime-host, initialization, hresult |
| END: coreclr_initialize failed - Error: 0x%08x | console | critical | coreclr, corerun, runtime-host, logging, hresult |
| BEGIN: coreclr_execute_assembly failed - Error: 0x%08x | console | critical | coreclr, corerun, runtime-host, assembly-load, hresult |
| END: coreclr_execute_assembly failed - Error: 0x%08x | console | critical | coreclr, corerun, runtime-host, logging, hresult |
| coreclr_shutdown_2 failed - Error: 0x%08x | console | error | coreclr, corerun, runtime-host, shutdown, hresult |
| Option %s: invalid form | validation | warning | coreclr, corerun, cli, argument-parsing, usage |
| Option %s: missing path | validation | warning | coreclr, corerun, cli, argument-parsing, clr-path |
| Option %s: missing property | validation | warning | coreclr, corerun, cli, argument-parsing, property |
| Option %s: '%s' missing property value | validation | warning | coreclr, corerun, cli, argument-parsing, property |
| Option %s: missing shared library path | validation | warning | coreclr, corerun, cli, argument-parsing, preload |
| Option %s: missing .env file path | validation | warning | coreclr, corerun, cli, argument-parsing, dotenv, env |
| Unknown option %s | validation | warning | coreclr, corerun, cli, argument-parsing, unknown-option |
| Fail: %s | console | error | coreclr, corerun, self-test, regression, assertion |
| Out of memory! | console | critical | ilasm, memory, out-of-memory, binstr, unicode |
| Out of memory! | console | critical | ilasm, memory, out-of-memory, fifo, template |
| Out of memory in Indx256::IndexString! | console | critical | ilasm, memory, out-of-memory, indx256, trie |
| Out of memory! | console | critical | ilasm, memory, custom-attributes, out-of-memory |
| OpenSSL is not available, but required for build determinism | console | error | ilasm, openssl, deterministic, linux, native-dependency |
| %s(%d) : error : %s at token '%s' in: %s | console | error | ilasm, parser, syntax, unicode, il-source |
| Error: Output file name exceeds %d characters | validation | error | ilasm, cli, filename, path-length |
| File Alignment must be power of 2 from 0x200 to 0x10000 | validation | error | ilasm, cli, pe, alignment, validation |
| Base address must be 0x10000-aligned | validation | error | ilasm, cli, pe, base-address, validation |
| Error : Invalid Option: %s | validation | error | ilasm, cli, invalid-option, usage |
| Invalid Image Base specified for 32-bit target | validation | error | ilasm, cli, pe32, base-address, validation |
| Failed to initialize Assembler | console | error | ilasm, initialization, native-dependency, setup-failure |
| Error: Fail to PAL_Initialize | console | critical | ilasm, pal, unix, initialization, install |
| OutOfMemory! | console | critical | ilasm, memory, method, out-of-memory |
| Unexpected: Failed to query the required MVID determinism in | console | error | ilasm, deterministic, metadata, mvid, clr-version |
| demo array size must be specified | validation | warning | vxsort, demo, cli, usage, argument |
| CPU doesn't seem to support any vectorized ISA, bye-bye | console | error | vxsort, demo, cpu, avx2, neon, hardware |
| Problem reading from createdump child_read_pipe: %s (%d)\n | console | error | nativeaot, createdump, pipe, unix, diagnostics |
| DOTNET_DbgEnableMiniDump is set and the createdump binary do | console | error | nativeaot, createdump, minidump, environment, diagnostics |
| Problem launching createdump (may not have execute permissio | console | error | dotnet, nativeaot, createdump, crash-dump, linux, diagnostics, permissions |
| Problem writing to createdump parent_write_pipe: %s (%d)\n | console | error | dotnet, nativeaot, createdump, crash-dump, pipe, diagnostics, linux |
| Problem waiting for createdump: waitpid() FAILED result %d w | console | error | dotnet, nativeaot, createdump, crash-dump, waitpid, linux, diagnostics |
| Problem reading from createdump child_read_pipe: %s (%d)\n | console | error | dotnet, coreclr, pal, createdump, crash-dump, pipe, diagnostics, linux |
| Problem launching createdump (may not have execute permissio | console | error | dotnet, coreclr, pal, createdump, crash-dump, linux, diagnostics, execve |
| Problem writing to createdump parent_write_pipe: %s (%d)\n | console | error | dotnet, coreclr, pal, createdump, crash-dump, pipe, diagnostics, linux |
| Problem waiting for createdump: waitpid() FAILED result %d w | console | error | dotnet, coreclr, pal, createdump, crash-dump, waitpid, linux, diagnostics |
| max-heap-size must be at least %dMb.\n | console | critical | mono, boehm-gc, garbage-collector, environment-variable, mono-gc-params, startup |
| max-heap-size must be an integer.\n | console | critical | mono, boehm-gc, garbage-collector, environment-variable, mono-gc-params, startup, configuration |