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npedley

2 Posts

1871

March 22nd, 2017 03:00

Problem launching OME

Hi,

When I try to launch OME on our server, I get the error 'Parser error: could not load type 'System.Web.UI.HtmlControls.Htmlframe' from assembly 'System.Web, version=4.0.0.0, culture=neutral...'

Some background - OME was working fine prior to a windows update that upgraded the .NET framework to 4.5.2 (we was previously running version 4).  It was not noticed for some time after but we now think this has broken OME.

We have uninstalled .NET framework 4.5.2 and re-installed version 4.0.  We have set OME to version 4.0 in the web.config file, and in the application pool (currently set to 'classic' mode, although 'integrated' mode doesn't work either).

We are now getting the error above when trying to launch OME.  Can you please advise?

Thanks,

Nick.

npedley

2 Posts

March 30th, 2017 07:00

Hi Shivendrea,

That worked perfectly - thank you very much for your help :)

Kind regards,

Nick.

DELL-Shivendra K

2 Intern

 • 

685 Posts

March 27th, 2017 08:00

Hi Nick,

Thanks for the query.

.NET frameworks are absolutely critical for proper functioning of OME. Generally, every OME version is tightly coupled with .NET framework features.

I would suggest you to first uninstall any and every .NET framework from the system. Then launch OME installer (setup.exe). It will list down critical pre-requisite for missing .NET frameworks. Resolve the notification using the setup only. Once the preconditions are met, click Install Essentials button on the same window which will repair OME (as it is already installed). Before finalizing OME install, make sure you click "Yes" when asked about using existing database. This will keep all your application data intact.

Let us know how it goes.

Please Note: Once done with OME repair, make sure you provide passwords again for any scheduled (pending) tasks and all discovery range configurations.

DELL-Shivendra K

2 Intern

 • 

685 Posts

March 30th, 2017 07:00

You are welcome, Nick!

Thanks for taking time and updating this thread.

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