After publishing, my Umbraco admin panel did not show up in IE9. But it appears in FF and Chrome browsers.
Note. Before publishing a website, I launch it from Visual Studio 2012, and I noticed that everything is in order.
Can anybody help me?
A disappearing tree is often associated with an error in calling Treedataservice.ashx .
Treedataservice.ashx
If you use the F12 developer tools in IE9, you can get the URL of this web service on the Network tab, it will look something like this:
http: //your-domain.local/umbraco/webservices/TreeDataService.ashx? rnd = d4859dc821714624be368bdafb1dd1d9 & id = -1 & treeType = content & contextMenu = true & isDialog = false & rnd2 = 89.4
Then, when you call the web service URL from the browser directly, you should be able to see the error returned and therefore fix the exact problem.
I tested 4.11.1 with IE9, and the tree is working correctly, so it says the problem is with your instance.
If the above web service is working correctly (it should return JSON), then it might be worth checking out other webservice calls like TreeClientService.asmx for errors.
TreeClientService.asmx
In most cases, checking these web services will reveal an actual problem that prevents the tree from rendering.