Please install the .NET Framework 1.1 and .NET SDK 1.1

Last Published: April 25, 2020

Error Message

When attempting to uninstall ArcGIS Server 9.1, the following error message is returned:

"Please install the .NET Framework 1.1 and .NET SDK 1.1"


To uninstall ArcGIS Server 9.1, Microsoft.NET Framework Software Developer Kit version 1.1 needs to be installed. Some installed features required the .NET SDK, so if it's missing, the software cannot be uninstalled.

Solution or Workaround

The Microsoft .NET Framework SDK 1.1 can be downloaded from the following link in the Related Information section of this article.

Article ID:000009804

  • ArcGIS Server

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