I was planning on adding another handler in my webconfig to make my reportviewer and updatepanel works
this is my current web.config
<system.webServer>
<handlers>
<!-- another handler to add here -->
<add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"/>
</handlers>
</system.webServer>
i tried adding this handler
<add name="ReportViewerWebControlHandlerV15" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"/>
and it works then after the next day for some reason the other system will not work, then i tried changing the name of the handler then it works again, then after that it will not work again, its been looping for days, i was wondering if i have to add something more to resolve this issue.
there was other system that was set up as for version 11 only, but my work is for version 15 so i was researching stuff for web config but sadly i didnt get any solution