Security News > 2021 > March > Microsoft Edge tests fix for DNS-over-HTTPS performance issues
Microsoft is testing a fix for performance issues in Microsoft Edge's DNS-over-HTTPS feature and has once again enabled a list of suggested DoH servers.
DNS-over-HTTPS allows DNS resolution to be performed over an encrypted HTTPS connection rather than through normal plain text DNS lookups.
Microsoft Edge added support for DNS-over-HTTPS in version 86, but the prepopulated DoH providers list/configuration pane was removed after users began reporting performance issues.
"Due to a performance issue recently discovered with DNS-over-HTTPS, we have temporarily turned off the built-in list of providers and the auto-upgrade logic that looks at your OS's DNS setting. Manually providing a resolver URL is still supported," Microsoft Edge engineer Alex Rowell explained in an Edge Insider forum post.
Microsoft has begun testing a fix for the DNS-over-HTTPS performance issues, and you now access the built-in list of providers once again in the latest Microsoft Edge Canary and Dev builds.
If your current provider shows that Secure DNS is not working, you can select one of the preconfigured DNS servers if on Edge Beta, Edge Dev, and Edge Canary and try the test again.
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