RES WebGuard: This assembly is protected by an unregistered version of Eziriz's ".NET Reactor"!

We are about to finish our XenApp 6.5 to XenApp 7.12 project at a customer. In the new Citrix setup, we are using RES One Workspace 2016 for now. An upgrade to RES One Workspace V10 is planned after go live.

One of the last annoying issues on the issue list is the following pop-up: This assembly is protected by an unregistered version of Eziriz’s “.NET Reactor”!

This message box doesn’t popup every time, so it was hard to reproduce the pop-up for investigating it’s source. After a long troubleshoot and google queries, the project member “Frank Slomp” has found the solution which I want to share with you.

The source of this Eziriz’s message box is RES One Workspace WebGuard Internet Explorer Add-in (RES.WebGuard.WebGuardIE). When contacting RES-Support they mentioned some other customer cases with the same Eziriz’s .NET Reactor message box. They told us that an upgrade to RES One Workspace V10 should solve this issue (did not test this out yet).

Since all the testing by the customer is done on RES One Workspace 2016 we don’t want to upgrade to V10 one day before go live. So I have another solution for users who don't want to upgrade to V10 yet. The customer had website security configured in “Learning mode”, so after disabling this feature the Eziriz’s .NET message box is gone (see Dutch screenshot).

Fixed: Internet Explorer “MfApHook64.dll” crash with RES One Workspace 2016 and Citrix 7.12 VDA

Today I was working on a XenApp 6.5 with RES One Workspace 2015 to XenApp 7.12 with RES One Workspace 2016 project. During this project I had crashes with Internet Explorer on Windows 2012 R2 with crashing module “MfApHook64.dll” version “7.12.0.211”. Screenshot in Dutch:


After troubleshooting I figured out that this problem is caused by RES One Workspace 2016. Somehow RES One Workspace is creating 64-bit Internet Explorer shortcuts instead of the default 32-bit Internet Explorer shortcuts. Due to this, Internet Explorer 64-bit is starting instead of Internet Explorer 32-bit. After contact with RES Support (very good helpdesk) I was facing an issue with RES One Workspace and the Citrix 7.12 VDA. Something is changed within the Citrix 7.12 VDA code. I think the new code for feature “HTML5 video redirection for internal web sites” is breaking RES One Workspace.

RES does have a private fix for this issue, but isn’t suitable for production environments at the moment (10-02-2017). So the only workaround is downgrade the VDA to 7.11 until RES is releasing a public fix for this issue.   

Update - 20 March 2017: RES Software released V10 of RES One Workspace. This version fixes the issue.

In-place-upgrade and installation of Citrix XenDesktop/XenApp 7.8 VDA on Windows 2012 R2 fails “Ica_TS.msi”

Today I unexpectedly had a challenge upgrading a Citrix XenApp 7.6 VDA to Citrix XenDesktop 7.8 VDA on Windows 2012 R2. During the in-place-upgrade of the 7.8 VDA or a reinstallation of the 7.8 VDA, the installation fails at the section Virtual Delivery Agent:

The XenDesktop Installation log (opened if Show error log is enabled) is showing the following error:

13:20:54.8513 $ERR$ : XenDesktopSetup:Installation of MSI File 'IcaTS_x64.msi' failed with code 'InstallFailure' (1603).

13:20:54.8513 $ERR$ : XenDesktopSetup:InstallComponent: Failed to install component 'ICA for Remote Desktop Services'. Installation of MSI File 'IcaTS_x64.msi' failed with code 'InstallFailure' (1603).

13:20:54.8523 $ERR$ : XenDesktopSetup:Recording installation failure. Installation of MSI File 'IcaTS_x64.msi' failed with code 'InstallFailure' (1603).

 

The following error is in the Application log of the Windows Eventviewer:

 

Product: Citrix HDX TS (retail) -- Error 1911. Could not register type library for file C:\Program Files\Citrix\Euem\Service\SemsComLibrary.tlb. Contact your support personnel.

 

 

To solve this issue, uninstall the following Windows updates prior updating or installing the Citrix XenDesktop 7.8 VDA:

• KB3139923, https://support.microsoft.com/en-us/kb/3139923
• KB3072630, https://support.microsoft.com/en-us/kb/3072630

After the VDA upgrade/installation it is save to reinstall the KB updates again!