JetBrains IntelliJ IDEA Ultimate 2025.1 won't start after upgrading

Same here.

Seeing this in log:

2025-04-22 10:31:35,890 [  11895]   INFO - #c.i.u.i.IndexDataInitializer - Index data initialization done: 9704 ms. Initialized indexes: [filetypes, FilenameIndex, Trigram.Index, fileIncludes, IdIndex, FrameworkDetectionIndex, Stubs, TodoIndex, XmlNamespaces, html5.custom.attributes.index, RelaxSymbolIndex, DomFileIndex, XmlTagNames, SchemaTypeInheritance, HtmlTagIdIndex, editorconfig.index.name, CssIndex, java.source.module.name, java.auto.module.name, HashFragmentIndex, css.template.selectors, bytecodeAnalysis, java.binary.plus.expression, JavaFxControllerClassIndex, java.null.method.argument, java.fun.expression, javafx.id.name, protoeditor.java.outer.class.index, javafx.stylesheets.name, json.file.root.values, javafx.custom.component, xmlProperties, FtlFileIndex, LombokConfigIndex, CompassFunctionsIndex, VtlFileIndex, http.request.completion.host, com.intellij.jpa.jpb.model.EntityRegisterFileIndex, http.request.execution.environment, taglibUris, PropertyCodeReferenceIndex, OpenapiSpecificationContentIndexer, http.request.headers.values.index, SwReferencesIndex, http.request.name.index, js.test.names, js.package.index, js.string.literal.words.index, HtmlScriptSrcIndex, js.custom.single.entry.index, js.implicit.elements.index, TypeScriptExternalPathCandidates, js.test.names.extensible, sql.routine.index, sql.types.count.index].
2025-04-22 10:31:36,167 [  12172]   INFO - #c.i.u.i.IndexDataInitializer - Index data initialization done: 292 ms. Initialized stub indexes: {Css.id, Scss.function, js.qualified.shortName, sql.table.shortName, js.used.remote.modules, java.method.name, postcss.custom.selector, Css.custom.mixin, js.amd.modules, Scss.mixin, JS.global.qualified.elements, js.export.default.react.component.index, js.typedef.index2, js.class.index2, ts.global.exported.index, Css.custom.variable, protobuf.byQualifiedName, js.lazy.packages, js.imported.bindings.index, protobuf.byShortName, es6.exported.index, Less.variables, Css.attr, markdown.header, Scss.variable, java.module.name, Less.mixins, js.symbol.index2, ts.external.module.name.index, java.method.parameter.types, js.doc.modules, sql.column.name, Css.ampersand.selector, sql.names, jvm.static.member.name, js.local.namespace.members.index, properties.index, java.class.fqn, ts.local.classes, js.element.qualifiedName, JS.class.super, Css.custom.property, java.annotations, Css.class, dom.namespaceKey, ts.embedded.content.index, js.generics.index, js.exported.index, java.class.extlist, java.class.shortname, postcss.custom.media, js.gcl.modules, js.global.symbol.index, JS.base.types.index, JS.framework.markers.index, JS.subclass.stub.index, JS.class.implements, js.nonglobal.symbol.index, redis.dml.shortName, ts.external.module.index, markdown.header.anchor, dom.elementClass, es6.assignment.index, amd.requirePaths.index, Scss.placeholder.selector, jvm.static.member.type, java.field.name, amd.baseUrl.index, js.symbol.qualified.names.index, java.anonymous.baseref, java.unnamed.class, js.namespace.index}.
2025-04-22 10:31:39,886 [  15891]   INFO - #c.i.o.w.i.ProjectFrameHelper - Creating status bar
2025-04-22 10:31:39,901 [  15906]   INFO - #c.i.o.w.i.ProjectFrameHelper - Status bar created
2025-04-22 10:31:39,995 [  16000]   INFO - #c.i.p.p.ProjectEntitiesStorage - Creating entity for project ProjectId(id=ls1o86ps91f3lo2m8hka)
2025-04-22 10:31:40,058 [  16063] SEVERE - #c.i.o.p.i.ProjectManagerImpl - project loading failed
java.lang.AbstractMethodError: Receiver class com.intellij.platform.project.backend.BackendProjectEntitiesStorage does not define or inherit an implementation of the resolved method 'abstract java.lang.Object createEntityImpl(com.intellij.openapi.project.Project, kotlin.coroutines.Continuation)' of abstract class com.intellij.platform.project.ProjectEntitiesStorage.
    at com.intellij.platform.project.ProjectEntitiesStorage$createEntity$2.invokeSuspend(ProjectEntitiesStorage.kt:38)
    at com.intellij.platform.project.ProjectEntitiesStorage$createEntity$2.invoke(ProjectEntitiesStorage.kt)
    at com.intellij.platform.project.ProjectEntitiesStorage$createEntity$2.invoke(ProjectEntitiesStorage.kt)
    at com.intellij.platform.kernel.ApiKt$withKernel$2.invokeSuspend(api.kt:24)
    at com.intellij.platform.kernel.ApiKt$withKernel$2.invoke(api.kt)
    at com.intellij.platform.kernel.ApiKt$withKernel$2.invoke(api.kt)
    at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:62)
    at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:163)
    at kotlinx.coroutines.BuildersKt.withContext(Unknown Source)
    at com.intellij.platform.kernel.ApiKt.withKernel(api.kt:22)
    at com.intellij.platform.project.ProjectEntitiesStorage.createEntity(ProjectEntitiesStorage.kt:34)
    at com.intellij.openapi.project.impl.ProjectManagerImplKt.initProject(ProjectManagerImpl.kt:1314)
    at com.intellij.openapi.project.impl.ProjectManagerImplKt.initProject$default(ProjectManagerImpl.kt:1295)
    at com.intellij.openapi.project.impl.ProjectManagerImpl$prepareNewProject$2.invokeSuspend(ProjectManagerImpl.kt:887)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
    at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:608)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:873)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:763)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:750)
2025-04-22 10:31:40,058 [  16063] SEVERE - #c.i.o.p.i.ProjectManagerImpl - IntelliJ IDEA 2025.1  Build #IU-251.23774.435
2025-04-22 10:31:40,058 [  16063] SEVERE - #c.i.o.p.i.ProjectManagerImpl - JDK: 21.0.6; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o.
2025-04-22 10:31:40,058 [  16063] SEVERE - #c.i.o.p.i.ProjectManagerImpl - OS: Windows 10
2025-04-22 10:31:40,058 [  16063] SEVERE - #c.i.o.p.i.ProjectManagerImpl - Last Action: WelcomeScreen.OpenProject
2025-04-22 10:31:40,151 [  16156]   INFO - #c.i.o.w.i.h.MainMenuWithButton - Main toolbar not found for recalculation of the menu width
 

@... 

It eventually loads IntelliJ after ~2-3 minutes and happens everytime across multiple projects.  Once a project is opened, I can quickly switch projects or open new ones, but once all projects are closed, then it takes another ~2-3 minutes to load. Your suggestions seem to be specifically about crashes or unable to load, which is not the case apparently with me now.  

I have exported logs & diagnostic data ( Help → Collect Logs and Diagnostic Data ) and uploaded them to your uploads.jetbrains.com site:

Upload id: 2025_05_06_8vXhZuKyDhZ1NrDsRnSCHR (file: idea-logs-20250506-17012013869532981021067668.zip)

I am running IntelliJ IDEA Ultimate 2025.1 on:

Chip: Apple M2 Pro
Memory: 32 GB
macOS: 15.4.1 (24E263)

 

Hello Jared, if you start the IDE from the command line , do you see any errors? Could you please share the output also?

Hello Bond Han, here you go: 

Upload id: 2025_05_07_23bntxZdCX2gG8djy3nfae (file: startup_logs.txt)

 

Does it help by clearing the contents under Configuration directory (backup first) and reinstalling the IDE then? I can see one error which is supposed to be fixed in this ticket.

I'm sorry, but wiping everything and re-installing is not a fix.  I don't have the time to be down that long.  Please also mark this ticket as un-answered since the problem still persists.

Bond Han 

I upgrade to 2025.1.1.1 and still the issue persists.  

I also uninstalled and re-installed through the JetBrains Toolbox and the issue persists.

Do you use any security software with somewhat stringent guidelines? The Defender was the cause of the comparable problem discovered in the Windows platform.  https://intellij-support.jetbrains.com/hc/en-us/articles/360005028939-Slow-startup-on-Windows-splash-screen-appears-in-more-than-20-seconds geometry dash

I’ve seen similar IntelliJ splash-screen freezes after updates cache corruption or plugin conflicts can be brutal. While waiting on a fix, I’ve been killing time commenting on trending sounds and grabbing downloads. https://intellij-support.jetbrains.com/hc/en-us/articles/360005028939-Slow-startup-on-Windows-splash-screen-appears-in-more-than-20-seconds soundboard

Thank you for creating this space to discuss such a common issue with upgrades; it’s so helpful! I can relate to the frustration of software not starting after an update, as these moments often interrupt workflow.

I noticed several users mentioned specific plugins causing issues—perhaps a cautious approach before updating might help others avoid similar headaches in the future. It’s interesting how sometimes our setups can vary so widely that what works for one doesn’t for another. Maybe sharing configurations or even discussing less common settings could lead to insights that help optimize everyone’s experience? I appreciate the community's willingness to share solutions and thoughts on this!  https://intellij-support.jetbrains.com/hc/en-us/community/posts/26188903384594-JetBrains-IntelliJ-IDEA-geometry dash lite-Ultimate-2025-1-won-t-start-after-upgrading