WebForm_PostBackOptions is Undefined - Check Your httpModules(stevenharman.net)

submitted by usshermussherm(5285) 4 years, 9 months ago

The WebResource.axd handler is a powerful new addition to asp.net Framework... and it's also a cause of the "WebForm_PostBackOptions not defined" JavaScript error message. But the root cause may really be your httpModules. Read on for more.

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posted by Bashara_HinnawiBashara_Hinnawi(0) 2 years, 10 months ago 0

I had this problem, when I accessed the webserver plesk panel, I realized that the version of .NET was set to 1.1, I changed it to 2.0 or Greater the error disappeared.

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