If clicking Riot Client produces no window, open Task Manager, end the remaining Riot Client and RiotClientServices.exe processes, and launch Riot Client once. If it still does not appear, run the Riot Client shortcut as administrator, test Riot's clean-boot setup, then reinstall one affected Riot game to reinstall the client. If Riot Client opens but the game does not, use the game's repair path instead.
Confirm that the Riot Client window is the failure
Click Riot Client once and wait 30 seconds. Continue here only if no sign-in or game-library window appears. If Riot Client opens and a game fails after you select Play, the launcher is working; use that game's repair button or exact error-code guide instead.
2
End the stuck Riot Client process
Press Ctrl + Shift + Esc to open Task Manager. End each entry named Riot Client and RiotClientServices.exe; if RiotClientUx.exe or RiotClientUxRender.exe is present, end those too. Wait until the Riot entries disappear, then open Riot Client once. Success means the sign-in or game-library window appears.
3
Run Riot Client as administrator
If no window appears, right-click the Riot Client shortcut and select Properties > Compatibility. Check Run this program as an administrator, select Apply, then OK, and open the shortcut again. Riot notes that a game executable should not be run as administrator unless Riot Client uses the same setting.
4
Test Riot's clean-boot setup
Press Windows + R, enter msconfig, and open Services. Check Hide all Microsoft services, select Disable all, then find vgc and check it again so Vanguard remains enabled. Select Apply > OK and restart Windows. Open Riot Client before starting other apps; if its window now appears, another startup service was interfering.
If Riot Client still shows no window, open Windows Settings > Apps > Installed apps, select one affected Riot game, and choose Uninstall. Restart if Windows asks, then download that game again from RiotGames.com. Riot's game installer installs Riot Client with it; the retest succeeds when the fresh client reaches its sign-in or game-library screen.
6
Collect Riot logs if the fresh client still fails
Download Riot Repair Tool, right-click it and select Run as administrator, choose the affected game, and let it create the log ZIP. Attach that ZIP to a Riot Player Support ticket and state that Riot Client itself produces no window after a clean boot and reinstall.
If Installed apps says Riot Client is still running, return to Task Manager, end the Riot processes named in step 2, and retry the uninstall. Windows may require one restart before removal succeeds.
After the clean-boot test, open msconfig again and select Normal startup so the services you disabled can load normally. Keep the clean-boot result in the support ticket if Riot Client worked only during that test.
Do not disable Windows Firewall, install a replacement DLL, or change graphics drivers merely because no Riot Client window appears. Those actions do not test the stuck client process or its installation.
ⓘ Sources and verification
Checked against official documentation on . Scope: Riot Client on Windows PC.
This guide is for a Riot Client window that does not appear on Windows. If the client opens and only a game fails after Play, use that game's error or repair guide.
