What causes "Webex App Crashing or Not Opening"?

Corrupted cache or settings Outdated Webex version Graphics driver conflict when video starts Leftover files from older Webex installs

How do I fix "Webex App Crashing or Not Opening"?

1. Reset the cache from the app: Open Webex > Help > Health Checker Click Reset and relaunch 2. Clear the cache manually: Windows: quit Webex, end it in Task Manager, delete the contents of %LOCALAPPDATA%\CiscoSpark Mac: quit Webex, Finder > Go > Go to Folder > ~/Library/Caches, empty Cisco-Systems.Spark; repeat in ~/Library/Application Support/Cisco Spark Relaunch Webex 3. Update the graphics driver: If crashes happen when video turns on, install the newest GPU driver Restart and retest 4. Run the removal tool and reinstall: Download the Webex removal tool from the Webex help center Run it to remove caches, traces, and old installs Reinstall the latest Webex App

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Webex App Crashing or Not Opening

Workaround available Windows, Mac Updated October 21, 2026

Quick answer

If the Webex App crashes, freezes on a white screen, or won't open, reset its cache (Help > Health Checker > Reset) or clear the cache folder manually. If that fails, run Cisco's Webex removal tool, reinstall, and update your graphics driver if crashes happen when video turns on.

Most likely fix: Reset the cache from the app.

Symptoms

Webex closes when starting or turning on video, opens to a white or blank window, or won't launch at all.

Why it happens

Corrupted cache or settings
Outdated Webex version
Graphics driver conflict when video starts
Leftover files from older Webex installs

How to fix it

Try these in order — the most common fix is first.

1. Reset the cache from the app
1. Open Webex > Help > Health Checker
2. Click Reset and relaunch
2. Clear the cache manually
1. Windows: quit Webex, end it in Task Manager, delete the contents of %LOCALAPPDATA%\CiscoSpark
2. Mac: quit Webex, Finder > Go > Go to Folder > ~/Library/Caches, empty Cisco-Systems.Spark; repeat in ~/Library/Application Support/Cisco Spark
3. Relaunch Webex
3. Update the graphics driver
1. If crashes happen when video turns on, install the newest GPU driver
2. Restart and retest
4. Run the removal tool and reinstall
1. Download the Webex removal tool from the Webex help center
2. Run it to remove caches, traces, and old installs
3. Reinstall the latest Webex App

This guide also covers

webex app crashing
webex not opening
webex white screen
webex keeps crashing

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