LoL Patch 26.14 Bugs & Fixes Guide: Riot Client, Vanguard, Error 004, Crashes & Update Problems

Last Updated: July 17, 2026

League of Legends Patch 26.14 introduced balance changes, new account features, and several bug fixes, but some players are also reporting technical problems after updating. Common complaints include Riot Client update loops, patch downloads getting stuck, Vanguard launch errors, crashes after Champion Select, and reconnect issues.

Before reinstalling League or changing system settings, check whether the problem is widespread or isolated to your PC. Some reports may be related to Riot Client, Vanguard, networking, or local system conflicts rather than confirmed Patch 26.14 bugs.

This guide covers the fastest fixes for:

• League of Legends Patch 26.14 update stuck or won't download

• Riot Client frozen, preparing download loop, or not opening

• Vanguard errors and launch failures

• League crashing after Champion Select

• Reconnect loops and failed match recovery

• Queue penalties caused by client crashes

Are These Problems Widespread?

Before troubleshooting your PC, check if the issue is server-side:

If...	Then...
Thousands of players report it	Wait for Riot
Only you have it	Continue troubleshooting
Riot Service Status shows an outage	Don't reinstall
Reddit is full of identical reports	Probably server-side

Patch-Day Tip: If login, matchmaking, reconnect, and update complaints all spike at the same time across Reddit and Riot Support, it's usually worth waiting 30–60 minutes before making major system changes. Server-side incidents often resolve faster than a full reinstall.

Before Trying Any Fix 

If Other Players Have the Same Problem

Before making major changes to your PC:

• ☐ Check Riot Games Service Status for your region

• ☐ Look for Riot Support announcements

• ☐ Check community forums to see whether other players are reporting the same issue

If many players are experiencing identical problems immediately after a patch, waiting for Riot to investigate may be more effective than reinstalling the game.

Should You Reinstall League? 

Probably not.

Most update problems are fixed by:

• Ending Riot processes in Task Manager

• Restarting your PC

• Repairing game files in the Riot Client

• Reinstalling Vanguard

Reinstall League only as a last resort. The repair option is built into the Riot Client and replaces damaged files without forcing you to reinstall the whole game.

Is Riot Aware?

Riot-Confirmed Fixed in Patch 26.14:

Status	Issue
✅ Fixed	Deafen/mute toggle spam – 60-second cooldown added
✅ Fixed	Caitlyn Headshot brush bug
✅ Fixed	Divine Domain infinite range bug
✅ Fixed	Combusting Interest damage-over-time gold bug
✅ Fixed	Smolder offered Combusting Interest
✅ Fixed	Remake votes now automatic – no need to type /remake

Player Reports (Not Yet Riot-Confirmed):

Issue	Status
Some players began reporting update stalls shortly after Patch 26.14 released. Riot has not confirmed these are new patch-specific issues, and several reports appear consistent with longstanding Riot Client or Vanguard problems.	⚠️ Reported
Error 004 during patch/update	⚠️ Community reported
Riot Client update stalls	⚠️ Community reported
Unexpected Parent Permissions restrictions affecting some accounts	⚠️ Player reports
Reconnect loops	⚠️ Community reported
Champion Select crashes	⚠️ Community reported

Important: Community reports do not necessarily indicate new Patch 26.14 defects. Riot Client, Vanguard, and networking issues can occur independently of a specific patch, so always check Riot's Service Status before assuming the update caused the problem.

Most Common Problems (Priority Order)

1. Riot Client Won't Update After Patch 26.14 (Fix) {#update-fix}

Symptoms:

• Update button remains stuck

• "Preparing Download" that never progresses

• Installing screen freezes

• Progress bar doesn't move

Possible Causes:

• A previous Riot session stayed alive after the visible window closed

• Riot Client is stuck in memory and can't start a clean patch attempt

• Damaged local install files

• Network route blocking the download from starting

• Riot Vanguard failing to update for a game that requires it

• Antivirus or firewall temporarily blocking newly updated Riot files

Quick Fixes:

1. Fully close Riot processes:

   • Press Ctrl + Shift + Esc to open Task Manager

   • End any running Riot Client, RiotClientServices, LeagueClient, or Vanguard processes

   • Restart PC once if you had to close several processes

2. Open Riot Client directly from Start menu instead of launching through game shortcut

3. Run Riot's repair option:

   • Open Riot Client

   • Click profile icon → Settings → affected game → Repair

4. Ensure sufficient free disk space

5. Right-click Riot Client shortcut → Run as administrator for one update attempt

6. Check network and reset DNS:

   • Turn off any VPN, proxy, or traffic-filtering app

   • Change DNS to 8.8.8.8 and 8.8.4.4

   • Run Command Prompt as admin: ipconfig /flushdns

7. Reinstall Vanguard (if affected game requires it):

   • Settings → Apps → Installed apps → find Riot Vanguard → Uninstall

   • Restart PC → Open Riot Client → launch game so Vanguard reinstalls

8. Antivirus/Firewall check:

   • Temporarily pause Windows Defender Controlled Folder Access or third-party antivirus if Riot Client cannot replace updated files, then re-enable it after patching

2. Error 004 After Patch 26.14 (Fix) {#error-004}

Symptoms:

• Cannot accept match invitations

• Client fails to load correctly

• Update completes but League refuses to start

• Error code appears during patching or client launch

Possible Causes:

• Corrupted local configuration files

• Damaged log files preventing client handshake with matchmaking servers

• Stale Riot processes blocking clean client startup

Community-Tested Fix:

1. Close Riot Client completely – End all Riot processes via Task Manager (Ctrl + Shift + Esc)

2. Open League installation folder – Navigate to C:\Riot Games\League of Legends\ (or your custom install location)

3. Delete corrupted folders: Locate and delete both the Config and Logs folders entirely

   • Note: This may reset some local client settings, so you may need to adjust preferences again after launching the game.

4. Restart your PC – This ensures all background processes are fully cleared

5. Launch Riot Client as Administrator – Right-click the shortcut and select "Run as Administrator"

6. Run Repair if the issue remains – Use the built-in repair tool in Riot Client settings

Important: This fix comes from community testing and is not an official Riot solution. Some players reported success, while others still required additional troubleshooting. If the problem persists, check Riot's Service Status and consider submitting a support ticket.

3. Patch Download Stuck {#download-stuck}

Symptoms:

• Progress frozen

• Verification loop

• Same percentage not moving

Possible Causes:

• Insufficient disk space

• Corrupted local files

• Network connectivity issues

Quick Fixes:

• Check disk space – ensure sufficient free space before patching

• Run repair option through Riot Client settings

• Close and relaunch Riot Client after ending all processes

• If all else fails, clean out leftover Riot files and reinstall:

  • Uninstall affected game via Settings → Apps

  • Delete leftover Riot folders (C:\Riot Games, %localappdata%\Riot Games)

  • Restart PC → Download fresh installer from Riot's official site

4. Vanguard Errors After Patch 26.14 (Fix) {#vanguard-fix}

Common Error Messages:

Code	Meaning	Quick Fix
VAN 57	Vanguard not running	Restart PC, reinstall Vanguard
VAN -81	Connection error	Restart PC + Riot Client; reinstall if persists
VAN 128	Connection error	Restart PC; follow VAN 128 guide
VAN9001	TPM 2.0 not enabled	Enable TPM in BIOS
VAN9003	Secure Boot not enabled	Enable Secure Boot in BIOS
VAN9006	Old Windows version	Update to Windows 10 (build 10.0.17134 or later) or Windows 11

Note: Other VAN codes may require Riot Support because they are account- or system-specific.

Why Vanguard Blocks Launch:

• The Vanguard service (VGC) is not running in the background

• Corrupted files or damaged registry entries

• Incomplete updates

Safe Fixes:

1. Restart Riot Client & PC – forces Vanguard to reload

2. Enable the VGC service:

   • Press Windows + R, type services.msc, press Enter

   • Locate vgc → Right-click → Properties

   • Startup type: Automatic → Click Start → Apply → OK

   • Restart PC

3. Clean uninstall & reinstall Vanguard:

   • Uninstall Riot Vanguard via Settings → Apps

   • Restart PC

   • Open Riot Client → launch game → Vanguard reinstalls automatically

   • Restart PC again

Post-Patch 26.14 Note: If Vanguard errors appear immediately after updating, restart Windows before reinstalling anything. Some players reported Vanguard reinstalling or resetting the VGC service helped with launch problems, but results vary.

What NOT to do:

• Don't delete Vanguard files manually

• Don't disable Vanguard services permanently

• Don't run Vanguard in compatibility mode

Community Tip: Several players report that reinstalling Vanguard and confirming the vgc service is set to Automatic resolved update loops after 26.14, although this is not a guaranteed fix.

5. Game Crashes After Champion Select {#crash-fix}

Known Reports:

• Client crash immediately after champion select completes

• Crash during loading screen

• Black screen after champion select

Possible Causes:

• Graphics driver conflicts

• Display scaling or fullscreen rendering issues

• Overlay applications (Discord, NVIDIA App, Xbox Game Bar, MSI Afterburner/RivaTuner)

• Background optimization or network-priority software (examples include motherboard utilities, gaming network boosters, or vendor software that prioritizes game traffic, such as Lenovo Vantage Network Boost or MSI utilities)

• Antivirus or firewall interference

Quick Fixes:

• Update GPU driver – out-of-date drivers often cause crashes

• Switch to Borderless Window instead of Fullscreen

• Update GPU drivers and test the available graphics renderer supported by your client

• Disable overlays (Discord, NVIDIA, Xbox Game Bar)

• Verify game files through Riot Client repair option

• Temporarily disable network optimization software (bandwidth prioritization, gaming modes, or motherboard utilities) before launching League to rule out software conflicts

6. Can't Reconnect {#reconnect-fix}

Symptoms:

• Reconnect loop

• Black screen on reconnect attempt

• Infinite loading

Possible Causes:

• Client crash corrupted the match connection state

• Server-side reconnect failure

Temporary Workarounds:

1. Full restart – Close all Riot processes, relaunch client, try reconnect

2. Wait 2-3 minutes – sometimes the match state resets

3. Check Riot status page – may be a server-side issue

4. If reconnect persists, submit a Riot Support ticket with logs

7. Queue Penalty After Client Crash {#queue-penalty}

Can LP be restored?

Queue dodging penalties are tiered based on frequency:

Queue Type	Tier 1	Tier 2	Tier 3+
Normal	6 min	30 min	720 min
Ranked	6 min	30 min	720 min
ARAM	15 min	30 min	720 min

Dodging also imposes LP penalties:

• Tier 1: -5 LP

• Tier 2+: -15 LP

Queue dodge LP penalties themselves do not directly trigger demotion, although repeated dodges and negative LP can still affect your matchmaking rating over time.

Should you submit a ticket?

• Riot typically does not restore LP lost because of client crashes unless the issue is caused by a widespread Riot service incident

• The penalty system treats all dodges the same, intentional or not

• Players can contact Support if widespread Riot-side outages caused the issue

Quick Fix Table 

Problem	Most Likely Cause	Best First Step
Update stuck	Stale Riot Client background process	End Riot tasks → Restart Client
Client frozen	Client cache or software conflict	Repair Client
Vanguard error	VGC service	Restart → Check VGC
Crash after Champ Select	Driver/Overlay	Disable overlays
Infinite reconnect	Server/match state	Wait 2–3 min → Restart

Are These Problems Actually Caused by Patch 26.14?

The difference matters:

Issue Type	Likely Cause
Client-side bugs	Stale Riot processes, insufficient disk space, damaged install files
Vanguard issues	Anti-cheat service failing to initialize or update
PC-specific issues	Graphics drivers, overlays, VPN interference, antivirus or firewall blocking updated files

Many players blame the patch for every problem, but distinguishing likely causes helps manage expectations. Most issues are local and can be fixed with the steps above.

Which Bugs Need Riot to Fix?

Cannot be fixed by players:

• ✅ Widespread client-side failures

• ✅ Server authentication issues

• ✅ Matchmaking problems

• ✅ Riot-side reconnect failures

Can usually be fixed locally:

• ✅ Corrupted game files (repair option)

• ✅ Vanguard initialization errors

• ✅ Graphics conflicts

• ✅ Client cache issues

• ✅ Riot Client update stuck (end processes, repair)

• ✅ Antivirus or firewall blocking updated files (temporarily disable or add exception)

What Usually Gets Fixed First?

Riot typically prioritizes login, matchmaking, and server issues first, while client bugs are typically addressed through hotfixes or future patches depending on severity.

What Usually Doesn't Help

• ❌ Reinstalling Windows

• ❌ Deleting registry entries from random YouTube videos

• ❌ Downloading unofficial "repair" tools

• ❌ Permanently disabling Vanguard

• ❌ Running multiple Riot Client instances

• ❌ Making system-wide changes before checking if Riot has confirmed an issue

• ❌ Repeatedly clicking Update while the client is frozen

• ❌ Force-closing Riot Client during file verification

Troubleshooting Checklist ⭐⭐⭐⭐⭐

Before reinstalling:

• ☐ Restart Riot Client (end all processes in Task Manager)

• ☐ Restart PC

• ☐ Check Riot server status

• ☐ Verify Vanguard is running (VGC service set to Automatic)

• ☐ Run repair option in Riot Client settings

• ☐ Ensure sufficient free disk space

• ☐ Update GPU driver

• ☐ Disable overlays (Discord, NVIDIA, Xbox Game Bar)

• ☐ Turn off VPN/proxy

• ☐ Temporarily disable network optimization software

• ☐ Try again

When Should You Contact Riot Support? ⭐

Contact Riot Support if:

• Vanguard errors continue after reinstalling Vanguard

• Riot Client still won't update after using the Repair tool

• The game crashes on multiple clean launches with no overlays running

• You're affected by a widespread outage that Riot has acknowledged but your issue persists afterward

Otherwise, try the troubleshooting steps above before opening a ticket.

FAQ

Why won't Patch 26.14 install?
Most commonly due to stale Riot processes still running, insufficient disk space, or network issues. Close all Riot processes via Task Manager and retry.

Why is Riot Client frozen?
A previous Riot session likely stayed alive after the visible window closed. End all Riot processes in Task Manager and relaunch.

Is Vanguard causing crashes?
Vanguard can cause launch failures if the VGC service isn't running or Vanguard files are corrupted. Check services.msc and reinstall Vanguard if needed. See the VAN error code table above for specific codes.

Can I uninstall Vanguard?
Yes, but it will automatically reinstall when you launch a Riot game that requires it.

Why do I get queue penalties after crashing?
The penalty system treats all dodges the same, intentional or not. Crashes that cause champion select failure incur the same penalties as intentional dodges. Queue dodge LP penalties themselves do not directly trigger demotion, although repeated dodges and negative LP can still affect your matchmaking rating over time.

Should I reinstall League?
Only after trying the repair option and troubleshooting checklist. Reinstall is a last resort.

Is Riot investigating these issues?
Patch 26.14 already fixes several gameplay and Arena issues listed in the official notes, while Riot continues monitoring new reports after release.

Could third-party software be causing League to crash?
Yes. Overlay applications, antivirus software, system optimization tools, and network-priority utilities can sometimes interfere with Riot Client or League after an update. Temporarily disabling them is a useful troubleshooting step if basic fixes don't work.

When will Patch 26.14 bugs be fixed?
Timeline depends on severity. Server issues are usually fixed within hours, client bugs are typically addressed through hotfixes or future patches depending on severity.

What Vanguard error codes should I know?
Common codes include VAN 57 (Vanguard not running), VAN9001 (TPM not enabled), and VAN9006 (old Windows). See the Vanguard error code table above for fixes.

What is Error 004?
Some players reported encountering Error 004 around the time Patch 26.14 launched. Riot has not confirmed it as a Patch 26.14-specific bug, and it may also occur outside this update. Standard Riot Client repair steps remain the recommended first troubleshooting option.

Why are Parental Controls suddenly enabled?
Riot introduced Parent Permissions as an optional account safety feature. However, some players reported unexpected chat restrictions or parental settings appearing on accounts that should not have been affected.

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• Why Is My League Chat Disabled After LoL Patch 26.14? Parent Permissions Bug Explained
• Meta Guide: Best Champions, Sleeper Buffs & Augments That Actually Matter
• Jayce's LoL Patch 26.14 Nerf: Why Riot Targeted Mobility Instead of Damage
• Is Senna Still Good After LoL Patch 26.14? Why Bot Lane Took the Hit While Support Survived
• League of Legends Patch Notes - Riot Games
• LoLArena Subreddit – Discussion Hub