Front-end assets from retool-edge.com failing to load for some customers

What to do

• Check whether you use Retool Classic web app, Infrastructure in us. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 2d 15h it lasted.

  Anything that failed between 2026-05-05 23:59 UTC and 2026-05-08 15:38 UTC may need a replay.

• Subscribe to Retool's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=retool works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Retool 8

1. investigatingMay 5, 2026, 11:59 PM UTC

   We are investigating errors for some users preventing Retool Apps from loading due to errors with retool-edge.com

   provider

2. identifiedMay 6, 2026, 12:41 AM UTC

   We've identified the issue is due to certain ISPs blocking the retool-edge.com domain. Confirmed ISPs are Comcast Business and Optimum (Altice USA / Cabelvision). We are actively working to remove the block.

   provider

3. identifiedMay 6, 2026, 1:52 AM UTC

   While we work on removing the ISP blocks, here is a workaround. You can temporarily resolve this by switching to a trusted public DNS resolver such as 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google). Mac: 1. System Settings → Network → select your connection → Details 2. Click the DNS tab 3. Add 1.1.1.1 or another trusted DNS resolver 4. Click OK Windows 11: 1. Settings → Network & Internet → select your connection (WiFi or Ethernet) 2. Scroll down to DNS server assignment → click Edit 3. Change to Manual, toggle on IPv4, enter 1.1.1.1 or another trusted DNS resolver 4. Click Save If you are not familiar with making these changes or your devices are managed by your organization, please reach out to your IT or infrastructure team for assistance. We are actively working to resolve the underlying issue. We will provide updates as we have them.

   provider

4. identifiedMay 6, 2026, 4:23 PM UTC

   Comcast Business SecurityEdge customers may find that the workaround mentioned does not work, and neither does allowlisting the retool-edge.com domain. In these cases, disabling SecurityEdge has been successful. If you are still experiencing issues after trying the DNS workaround, we recommend reaching out to your IT team to check whether retool-edge.com has been added to a block list at the device profile or network level. Some filtering policies may be blocking the domain regardless of your DNS settings. We are continuing to work with ISPs to unblock the domain and will provide updates as we have them.

   provider

5. identifiedMay 6, 2026, 8:51 PM UTC

   TALOS has reclassified our domain. We have escalated directly to affected ISPs to have the block fully lifted and are actively working toward a resolution. We will provide another update once full resolution is confirmed.

   provider

6. monitoringMay 7, 2026, 6:47 PM UTC

   We are seeing reports of some users returning to normal operation. We are continuing to work with ISPs to remove the block on retool-edge.com and will keep you posted on our progress. If you are still experiencing issues, the workaround below remains available.

   provider

7. monitoringMay 8, 2026, 12:26 AM UTC

   We are no longer receiving new reports of users being affected. We will continue to monitor this incident over the next 24 hours before marking it as resolved.

   provider

8. resolvedMay 8, 2026, 3:38 PM UTC

   All affected ISPs have confirmed that retool-edge.com is no longer being blocked. This incident is now resolved. Thank you for your patience.

   provider

Corrections

None so far.

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