Web GUI doesn't work in older browsers

[alguryanow]

After automatic upgrade from 0.14.52 to 0.14.53 webGui doesn't work anymore in Firefox 29.
The main page is almost empty and it seems like javascript isn't working. For example on the top of the page I see {{thisDeviceName()}} instead of the actual name of device. I do not see any shared folders (just the header "Folders") and connected devices. I'm also unable to open any page with settings - when I click on any menu-item from menu Actions nothing happens.

And I unable to start previous version (syncthing.old) because of changed database format:

[235QK] 12:14:03 FATAL: Database schema: Syncthing v0.14.53 required

Version Information

Syncthing Version: v0.14.53
OS Version: some old clone of Debian
Browser Version: Firefox 29.0

I'm unable to upgrade browser on this system. I'm unable to use any other browser on this system as well.
GUI was working well just before automatic upgrade of syncthing (previous one was 0.14.52)

Because of non-working GUI right now I'm unable to reconfigure syncthing to allow access from other computers.

[calmh]

The one thing I can imagine is the new TLS 1.2 requirement; however TLS 1.2 should be supported in Firefox 27+ according to my Googling.

Have you manually disabled it? (about:config, security.tls.version.max, you want "3")

[mrkingmidas]

Hello! I have same problem with IE 11. Interface does to load, but program work:

[calmh]

I'll Google that too for you:

https://accountants-community.intuit.com/articles/1737631-how-to-enable-tls-1-2-in-internet-explorer-11

Try those steps.

---

Edit: Though... That's an HTTP link. Can you check the browser javascript console for any errors?

[uok]

In the screenshot there is a HTTP url, so it must be something else?

[calmh]

Yeah, just realized.

[mrkingmidas]

I am try, but already this settings set by admin. This is WinServer 2012 R2.

[calmh]

Can you check the browser javascript console for any errors?

[mrkingmidas]

This console ?

[uok]

IE11 gives this JS error

Error: [ng:areq] Argument 'SyncthingController' is not a function, got undefined
http://errors.angularjs.org/1.3.20/ng/areq?p0=SyncthingController&p1=not%20a%20function%2C%20got%20undefined
at assertArg (https://myhost:1234/vendor/angular/angular.js:1609:5)
at assertArgFn (https://myhost:1234/vendor/angular/angular.js:1619:3)
at Anonymous function (https://myhost:1234/vendor/angular/angular.js:8512:9)
at Anonymous function (https://myhost:1234/vendor/angular/angular.js:7680:13)
at forEach (https://myhost:1234/vendor/angular/angular.js:353:11)
at nodeLinkFn (https://myhost:1234/vendor/angular/angular.js:7667:11)
at compositeLinkFn (https://myhost:1234/vendor/angular/angular.js:7159:13)
at publicLinkFn (https://myhost:1234/vendor/angular/angular.js:7038:30)
at Anonymous function (https://myhost:1234/vendor/angular/angular.js:1479:11)
at Scope.prototype.$eval (https://myhost:1234/vendor/angular/angular.js:14589:9)

which seems because of (partial) missing ES6 support
https://stackoverflow.com/questions/40473277/error-ngareq-argument-maincontroller-is-not-a-function-got-undefined-in-i
https://angular.io/guide/browser-support
could also be the reason for old FF

[calmh]

Yeah, screenshot error points to Object.entries which seems like something newfangled

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries

[calmh]

Oh and I see there is also ES6 syntax there, yes.

[calmh]

Can you affected people try this build to see if it resolves the issue?

• Windows
• Unixes

[mrkingmidas]

• Windows
  Yes, 64-bit version work!

[calmh]

Dropping a 0.14.54 to fix this.

[uok]

Great bug hunting everybody! 🎉

[alguryanow]

On old Debian's clone in Firefox 29 patched version works too. And 0.14.54 as well.

Thanks a lot!

[bugith]

I keep a copy of "SSL Version Control 0.4.1-signed.xpi" plugin to run with old FF. Maybe hard to find nowadays. Just ask