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1 answer
16 views
I have packaged up progress control panel as win32 app available to download in company portal for users however when user open the app it requires admin account, how would you offset that and let the app run as normal user.
Vesko
Telerik team
 answered on 17 Aug 2026
1 answer
20 views
After upgrading from 2019 to 2025.4.1210.462, I am experiencing a JavaScript error when my ASP.NET Web Forms application is opened from Encompass Desktop (embedded browser). The same pages work in modern browsers (Chrome/Edge), but fail inside Encompass.

Environment
Product: Telerik UI for ASP.NET AJAX
Version: 2025.4.1210.462
.NET Framework: 4.8
App type: ASP.NET Web Forms
IIS: Integrated pipeline
Host path: /MyService/
Controls used: RadScriptManager, RadAjaxManager, RadGrid, RadComboBox, RadAjaxPanel, etc.
Entry page from Encompass: Validation.aspx (standalone page, not using a master page)
Telerik CDN: Disabled
RadScriptManager: EnableScriptCombine="false"

Error

When opening MyService from Encompass Desktop, users see:

An error has occurred in the script on this page.

Line: 1
Char: 173461
Error: Invalid character
Code: 0
URL: /MyService/ScriptResource.axd?d=...

What we found
When inspecting the script response, we see modern JavaScript syntax that appears incompatible with the Encompass embedded browser (IE-like engine), for example:

_renderActiveItemStyle:function(e){
  var t=this.get_owner().get_id(),
  i=`${t}_ActiveItemStyle`;
  ...
  e=e.replaceAll(";"," !important;");
  ...
}

It looks like ES6 template literals and replaceAll() are causing a parse error in the embedded browser.

Questions
1) Is Q1 2025 officially unsupported in Internet Explorer/embedded WebBrowser-style hosts such as Encompass Desktop?
2) Is the _renderActiveItemStyle function with template literals expected in Q1 2025 RadGrid scripts?
3) Is there any supported configuration to serve IE-compatible JavaScript while staying on Q1 2025?
     e.g. OutputCompression, CDN, RenderMode, legacy script bundle, etc.
4) If not, what is the recommended Telerik version for IE/embedded browser scenarios - is R3 2022 SP1 (2022.3.1109) the last supported release?
Vasko
Telerik team
 answered on 22 Jun 2026
1 answer
67 views

@(Html.Kendo().DropDownTree() .Name("LocationID") .Label(label => { label.Content("Select an Location..."); }) .DataTextField("Name") .DataValueField("id").Value(Model) .HtmlAttributes(new { style = "width: 100%" }) .Filter(FilterType.Contains) //.LoadOnDemand(true) .DataSource(dataSource => dataSource.Read(read => read.Action("GetLocationListForDDTree", "DataService") ) )) 

 

DropDownTree filter searches all nodes independently.
So when a child matches, it shows only that node, buti required if filter parent node list out all child node? is possible 

Viktor Tachev
Telerik team
 answered on 16 Mar 2026
1 answer
159 views
I purchased a service here on the site through an intermediary, but this intermediary doesn't want me to contact the seller directly because I want to purchase again. My question is, I have the software installed on my computer; is there a way to contact the seller through the software since I want to purchase again? Thank you.
Dimo
Telerik team
 answered on 06 Nov 2025
1 answer
109 views
Hello, I am trying to locate the checksum for the Progress Control Panel installer but it doesn't seem to be on the download page. Would anyone know where that may be available at? 
2 answers
300 views

Good day,

i'm trying to update the control panel but i'm stuck with this screen:

The folder doesn't have that name and i if i try to browse over there is still not valid.

Same with the latest exe from the website and I can't even uninstall it and i'm stuck with updates i cannot do

Viliana
Telerik team
 answered on 11 Jun 2025
0 answers
173 views

 

MSI (s) (F0:0C) [13:22:43:458]: MainEngineThread is returning 1620
This installation package could not be opened. Contact the application vendor to verify that this is a valid Windows Installer package.
C:\WINDOWS\Installer\1eb8b829.msi
MSI (s) (F0:38) [13:22:43:459]: User policy value 'DisableRollback' is 0
MSI (s) (F0:38) [13:22:43:459]: Machine policy value 'DisableRollback' is 0

Trying to install into VS 2022.

Rob.

Rob
Top achievements
Rank 3
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Bronze
Iron
 asked on 29 Apr 2025
0 answers
265 views

HI:

When I want to run ProgressControlPanelSetup_2025_1_0228_0.exe show below
There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor.

The windows event log show
Product: Progress Control Panel -- Error 1723. There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor.  Action CheckForExistingNotificationSchedule, entry: CheckForExistingNotificationSchedule, library: C:\Windows\Installer\MSIAFCD.tmp 

How can I do for it?

Su
Top achievements
Rank 1
 asked on 03 Mar 2025
3 answers
404 views

Hi,

I'am frequently getting emails of new blogs and advertisement without any link or chance to unsibscribe.

I couldn't also find any option to unsibscribe in my account settings.

Please remove me from all your maling lists.

 

Thanks

Timo

cristian
Top achievements
Rank 1
 answered on 17 Oct 2024
1 answer
198 views

I run Progress Control Panel using the Run as Administrator option.  My company setup requires me to do that.  After I enter my Windows user id and password (required by my computer setup for an administrator application) I get the message "The required operation requires elevation."

I am running Windows 10 64 bit, version 22H2, build 19045.4780.

Thank you.

 

Vesko
Telerik team
 answered on 13 Sep 2024
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