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Is VWO Down?

No — VWO is up

Reachable from all 8 checked regions

Average response time: 298ms

Last checked · checks run every 6 hours

Official status page: https://status.vwo.com

VWO uptime

100%
Last 7 days
100%
Last 30 days
100%
Last 90 days
452ms
Avg response, 30 days

Measured from multiple regions every 6 hours. Percentages count only checks that returned an availability answer — 46 days measured so far. A dash means that window does not yet hold enough measured days to publish a figure.

30-day history

46-day clean streak
Sep 13: 100.00% uptime, 32 checks
Sep 14: 100.00% uptime, 31 checks
Sep 15: 100.00% uptime, 32 checks
Sep 16: 100.00% uptime, 32 checks
Sep 17: 100.00% uptime, 32 checks
Sep 18: 100.00% uptime, 32 checks
Sep 19: 100.00% uptime, 32 checks
Sep 20: 100.00% uptime, 32 checks
Sep 21: 100.00% uptime, 32 checks
Sep 22: 100.00% uptime, 39 checks
Sep 23: 100.00% uptime, 32 checks
Sep 24: 100.00% uptime, 32 checks
Sep 25: 100.00% uptime, 32 checks
Sep 26: 100.00% uptime, 32 checks
Sep 27: 100.00% uptime, 32 checks
Sep 28: 100.00% uptime, 32 checks
Sep 29: 100.00% uptime, 31 checks
Sep 30: 100.00% uptime, 32 checks
Oct 1: 100.00% uptime, 32 checks
Oct 2: 100.00% uptime, 32 checks
Oct 3: 100.00% uptime, 32 checks
Oct 4: 100.00% uptime, 32 checks
Oct 5: 100.00% uptime, 32 checks
Oct 6: 100.00% uptime, 32 checks
Oct 7: 100.00% uptime, 32 checks
Oct 8: 100.00% uptime, 31 checks
Oct 9: 100.00% uptime, 32 checks
Oct 10: 100.00% uptime, 32 checks
Oct 11: 100.00% uptime, 32 checks
Oct 12: no data
Sep 13 Today
No downtime Partial Downtime Not measurable No data

Reachability by region

Each region runs its own request from a different part of the world. A service can be up for one continent and down for another, which is usually the first sign of a routing or CDN problem.

cdg
415ms
DNS 51ms TCP 2ms TLS 7ms TTFB 254ms
dfw
173ms
DNS 75ms TCP 1ms TLS 6ms TTFB 160ms
ewr
119ms
DNS 28ms TCP 2ms TLS 26ms TTFB 107ms
fra
452ms
DNS 67ms TCP 1ms TLS 10ms TTFB 290ms
gru
341ms
DNS 27ms TCP 7ms TLS 10ms TTFB 206ms
iad
97ms
DNS 30ms TCP 1ms TLS 7ms TTFB 86ms
jnb
544ms
DNS 16ms TCP 1ms TLS 8ms TTFB 362ms
lax
244ms
DNS 96ms TCP 1ms TLS 9ms TTFB 194ms

What VWO does

VWO is an experimentation platform for websites and apps. A JavaScript snippet called SmartCode loads on a customer's pages, decides which variation a visitor sees, and reports conversions back. Product and growth teams use it for A/B tests, personalisation, heatmaps and session recordings. Its parent Wingify merged with AB Tasty in January 2026 and is consolidating products under the Wingify name.

What an outage looks like

Running tests quietly stop applying. Visitors see the original page instead of their assigned variation, and conversions in that window are never recorded, so the effect is missing data rather than a broken site. The dashboard may fail to load or show reports that stop updating. Heatmaps and session recordings develop a gap over the same period.

What to do about it

Check status.vwo.com, which separates the VWO Application from DaCDN, the network that serves SmartCode to your visitors: a DaCDN incident affects your website traffic while the dashboard looks fine. SmartCode is asynchronous by default and times out rather than blocking, so your pages keep loading. Treat the affected window as unusable test data and exclude it before reading results.

Is it down for everyone, or just you?

If this page says VWO is up but it is not loading for you, the problem is between you and them. Run a check against any URL from up to 17 cities across three regions to find out where it breaks.

Test it yourself

Related services

VWO outage FAQ

Does a VWO outage break my website?
No. SmartCode runs asynchronously by default, so it loads alongside your page instead of blocking it. VWO applies a settings timeout of 2000 milliseconds and a library timeout of 2500 milliseconds, configurable up to 5000. When either expires, the original content is shown to visitors and the page finishes loading normally.
What happens to my running tests?
They pause without telling you. Visitors during the incident see original content rather than variations, and their conversions are not tracked. VWO retries on the visitor's next page view or refresh, so tests resume on their own. The lasting cost is a hole in the data, which is why excluding that window before reading results matters more than the downtime itself.
What is DaCDN and why is it a separate component?
DaCDN is the delivery network that serves the SmartCode library and campaign settings to your visitors' browsers. It is listed separately because it fails independently of the VWO Application: your dashboard can be entirely healthy while visitors on your site get no test at all, and the reverse happens too.
Why does VWO now redirect to Wingify?
Wingify is VWO's parent company and the brand the products are consolidating under. The application domain moved from app.vwo.com to app.wingify.com on 13 June 2026, though both still serve the same application, and help articles now sit on help.wingify.com. Wingify merged with AB Tasty on 20 January 2026.

How we measure this

  • We request VWO's public endpoint every 6 hours from Fly.io regions across six continents — the most recent check ran from 8 of them.
  • A region counts as down only when it gets no usable HTTP response. A 403 or 429 means the origin answered and refused us, which we report as blocked, never as an outage.
  • A single failing region is treated as probe noise. We only change the verdict when two consecutive cycles agree.
  • Response times average only the regions that actually served the page, so a timeout never inflates the number.
  • Where VWO publishes an official status feed we read it too. An all-clear from the vendor can soften an unconfirmed degradation; a vendor-declared outage only worsens our verdict when our own checks corroborate it.

Get alerted when VWO goes down

This page refreshes every 6 hours. Your own monitors run as often as every 30 seconds, from up to 17 cities across three regions, and tell you the moment something breaks.

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