# \[Blocker\] \[Critical\] Cannot connect to server for days. Fortnite CRASH, Cannot Launch Session. Getting FAILURE and FATAL messages in outlog. **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** error, bug, connection, Server, failure, launcher-crash, unreal-engine, launch-failed, fortnite-creative, unreal-editor-for-fortnite, fail, bug-report, package-error, sync, fortnite\ **Created:** [February 15, 2024, 12:55pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482 "2024-02-15T12:55:51Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![PledgedRanger](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/pledgedranger/32/1039255_2.png) [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Post date:** [February 15, 2024, 12:55pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/1 "2024-02-15T12:55:51Z")
### Reference ID 0cb5c521-468b-09c9-0939-0b9aab845b99 ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Other ### Summary QueryServiceStatus request failed, Message=Connection to the server failed, Raw=connection\_failure, Failed to sync project PlunderTheCaves with content service, LogValkyrieActivityTracker: Warning: None → Fail Activity: PlunderTheCaves - Failed to sync project info with content service. Error: Connection to the server failed. ### Steps to Reproduce 1. Launch Session 2. Fails 3. Project size is at 94% 4. Have not added anything to the map, cell memory is at 80,000 5. Fatal Error, Crtitcal Error, Blocker, I am unable to launch a session with the fortnite editor. 6. The package is looking for files my antivirus deleted from the Programfiles\Epicgames\Fortnite\localization folder is empty 7. I need somebody to help me please. To Attempt fixing this issue 8. Uninstalled Fortnite, Uninstalled UEFN, Relocated Project Folder, deleted project, restored older file from revision control, synced project, deleted level, tested EVERYTHING. Hit Launch Session. FAIL\> Nothing works. ### Expected Result When following the steps above, I should be able to lauch a session. Or when restoring a project with revision control, or reinstalling fortnite, the folders in AppData or Program Files should be repopulated. Does this mean my game is completely broken forever? ### Observed Result Fortnite Crashes every time I press “Launch Session” in UEFN. I can open Fortnite in any other project it works. This one it stopped working for no apparent reason. ### Platform(s) WINDOWS ### Island Code 2354-4963-5836 ### Additional Notes LogOnline: Warning: MCP: Http Unexpected Result: HttpResult: 0 Code: 0 Error: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure LogValkyrie: Syncing project PlunderTheCaves with content service took 600.03 sec LogValkyrie: Error: Failed to sync project PlunderTheCaves with content service: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure LogValkyrieSummary: Project PlunderTheCaves failed to update LogValkyrieActivityTracker: Warning: None → Fail Activity: PlunderTheCaves - Failed to sync project info with content service. Error: Connection to the server failed. LogValkyrie: Unable to play: Validation failed LogValkyrieActivityTracker: Warning: Upload → Fail Activity: UploadProjects - All uploads failed with errors LogHttp: Warning: Timeout on retry 1: [https://content-service.bfda.live.use1a.on.epicgames.com/api/content/v2/module/2705f0c6-49c4-10ff-b18b-1c9e1c0b06c6/version/362/status](https://content-service.bfda.live.use1a.on.epicgames.com/api/content/v2/module/2705f0c6-49c4-10ff-b18b-1c9e1c0b06c6/version/362/status) LogOnline: Warning: MCP: Http Unexpected Result: HttpResult: 0 Code: 0 Error: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure LogOnline: Warning: MCP: QueryServiceStatus request failed. Service query already in progress. LogOnlineAccount: Warning: [UOnlineAccountCommon::OnQueryServiceStatusComplete] Unknown service status return from service availability - lightswitch service down or other unexpected error. Allowing play to continue if client previously saw UP response. LogValkyrie: UEFN Bug Report Metadata: LogValkyrie: ReportId: 0cb5c521-468b-09c9-0939-0b9aab845b99 LogValkyrie: EpicAccountId: 71d6d817afc84e868fef3e5d0f13e663 LogValkyrie: LoginId: 8750ab054c49b46d1c7d2586f521b2db LogValkyrie: GameSessionId: LogValkyrie: ProjectId: 6455cc10-4532-b6c9-44ff-caaa1b9dc67b ---
**Author:** ![PledgedRanger](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/pledgedranger/32/1039255_2.png) [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Post date:** [February 15, 2024, 12:56pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/2 "2024-02-15T12:56:27Z")
![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/b/3/7b3d4f9baead24b9d3985235ef50159b8333c548.png) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/0/9/f09839ad28ceecd0c4a3522b5374357a84ecbbaf.png) ![Screenshot 2024-02-15 052743](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/b/0/1b0989e9cbf91f1a67625a84c0aaf89f94788b3d.png) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/c/6/3c6f6324e743b0ab6200f85a9d1c5cfc8c39c2d4.png) ![Screenshot 2024-02-15 043713](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/3/a/e3a3f4bbd0d43eff1868176c2450ffbabb34d0c1.png) ![Screenshot 2024-02-15 023126](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/0/5/c0513847fcfe7b92561a20760e9e38597aa0cfe7.png) ---
**Author:** ![PledgedRanger](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/pledgedranger/32/1039255_2.png) [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Post date:** [February 15, 2024, 1:36pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/3 "2024-02-15T13:36:44Z")
Now THIS! ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/6/9/a691c1b5844151690e9dc624db0f0cc4b86d478a.png) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/e/0/6e0febfb6ea5fc36c949f12bf7d1f2f887a62f03.jpeg) ---
**Author:** ![PledgedRanger](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/pledgedranger/32/1039255_2.png) [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Post date:** [February 15, 2024, 1:39pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/4 "2024-02-15T13:39:52Z")
LogOnline: Warning: MCP: Http Unexpected Result: HttpResult: 0 Code: 0 Error: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure LogValkyrie: Syncing project PlunderTheCaves with content service took 600.33 sec LogValkyrie: Error: Failed to sync project PlunderTheCaves with content service: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure LogValkyrieSummary: Project PlunderTheCaves failed to update LogValkyrieActivityTracker: Warning: None → Fail Activity: PlunderTheCaves - Failed to sync project info with content service. Error: Connection to the server failed. LogValkyrie: Unable to play: Validation failed LogValkyrieActivityTracker: Warning: Upload → Fail Activity: UploadProjects - All uploads failed with errors LogOnline: Warning: MCP: QueryServiceStatus request failed. Service query already in progress. LogOnlineAccount: Warning: [UOnlineAccountCommon::OnQueryServiceStatusComplete] Unknown service status return from service availability - lightswitch service down or other unexpected error. Allowing play to continue if client previously saw UP response. LogHttp: Warning: Timeout on retry 1: [https://content-service.bfda.live.use1a.on.epicgames.com/api/content/v2/module/2705f0c6-49c4-10ff-b18b-1c9e1c0b06c6/version/362/status](https://content-service.bfda.live.use1a.on.epicgames.com/api/content/v2/module/2705f0c6-49c4-10ff-b18b-1c9e1c0b06c6/version/362/status) LogOnline: Warning: MCP: Http Unexpected Result: HttpResult: 0 Code: 0 Error: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure LogSourceControl: Warning: RunCommandInternalRaw(project status lite): Errors = ‘Unreal Revision Control is not logged in (using expired token).’ SourceControl: Error: Connection Error: Unreal Revision Control is not logged in (using expired token). SourceControl: Error: Unreal Revision Control is not logged in (using expired token). LogSourceControl: Warning: RunCommandInternalRaw(project status lite): Errors = ‘Unreal Revision Control is not logged in (using expired token).’ SourceControl: Error: Connection Error: Unreal Revision Control is not logged in (using expired token). SourceControl: Error: Unreal Revision Control is not logged in (using expired token). LogOnline: Warning: MCP: QueryServiceStatus request failed. Service query already in progress. LogOnlineAccount: Warning: [UOnlineAccountCommon::OnQueryServiceStatusComplete] Unknown service status return from service availability - lightswitch service down or other unexpected error. Allowing play to continue if client previously saw UP response. LogOnline: Warning: MCP: QueryGameAccess request failed to start. HTTP request already pending for game access LogSourceControl: Warning: RunCommandInternalRaw(project status lite): Errors = ‘Unreal Revision Control is not logged in (using expired token).’ SourceControl: Error: Connection Error: Unreal Revision Control is not logged in (using expired token). SourceControl: Error: Unreal Revision Control is not logged in (using expired token). ---
**Author:** ![Wertandrew](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wertandrew/32/916192_2.png) [@Wertandrew](https://forums.unrealengine.com/u/Wertandrew)\ **Post date:** [February 17, 2024, 2:48pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/5 "2024-02-17T14:48:16Z")
I started having the same today, after replacing a lot of textures with lower resolution to optimize my project. I was on 109% project size, with HLODs enabled and world streaming enabled. If something seems similar to your case, maybe we can figure out the culprit ![UnrealEditorFortnite-Win64-Shipping_7jH6R0T0Mx](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/3/6/b369152a5d19dcd27b3b7aa1f609682719728c1e.jpeg) ![9YaxowmB6r](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/c/e/acea21a467e33b4166fdfb8f29b4e8c48f2273a5.jpeg) ---
**Author:** ![HalcyonKnight96](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/halcyonknight96/32/924312_2.png) [@HalcyonKnight96](https://forums.unrealengine.com/u/HalcyonKnight96)\ **Post date:** [February 17, 2024, 5:24pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/6 "2024-02-17T17:24:12Z")
We’re looking into this. ---
**Author:** ![HalcyonKnight96](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/halcyonknight96/32/924312_2.png) [@HalcyonKnight96](https://forums.unrealengine.com/u/HalcyonKnight96)\ **Post date:** [February 17, 2024, 5:56pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/7 "2024-02-17T17:56:01Z")
For anyone seeing this issue please try disabling Firewall/Antivirus to see if that works. ---
**Author:** ![Wertandrew](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wertandrew/32/916192_2.png) [@Wertandrew](https://forums.unrealengine.com/u/Wertandrew)\ **Post date:** [February 17, 2024, 7:37pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/8 "2024-02-17T19:37:01Z")
Alright, so the fix for me was the following: I use Avast antivirus, so I had to exclude the following folder from the file shield: “C:\Users\\AppData\Local\UnrealEditorFortnite” ![Discord_6mjZEk86G4](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/a/7/8a741ed392088e7dac8090c2539eb9bed7ec932b.jpeg) Type it on the advanced exception, under folder: ![AvastUI_QPV54VS5QQ](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/4/5/345d64f497c77b55b4b7142c9b2e97cb791f7388.jpeg) (you ll get a warning, I pressed next) ---
**Author:** ![PledgedRanger](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/pledgedranger/32/1039255_2.png) [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Post date:** [March 10, 2024, 11:03pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/9 "2024-03-10T23:03:59Z")
Thanks @Wertandrew so smart indeed 🙂 thanks support @HalcyonKnight96 ! my antivirus! It was the dark side. ---
**Author:** ![Sky001](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sky001/32/1092299_2.png) [@Sky001](https://forums.unrealengine.com/u/Sky001)\ **Post date:** [November 20, 2024, 6:54pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/10 "2024-11-20T18:54:53Z")
This is working for BitDefender too! 🙂 ---
**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\ **Post date:** [November 21, 2024, 12:42pm UTC](https://forums.unrealengine.com/t/blocker-critical-cannot-connect-to-server-for-days-fortnite-crash-cannot-launch-session-getting-failure-and-fatal-messages-in-outlog/1690482/11 "2024-11-21T12:42:20Z")