Report was running fine since last 2 months but now having below issue : Error Creating Report instance. When same reports deployed on another server (IIS) its working fine.
I want to run that report on previous server but didn't succeed. getting response internal 500 error.
This issue is on clicking preview button on report.
1 Answer, 1 is accepted
Hello Danish,
This error is often seen when the report and assemblies are from different versions. The easiest way to ensure that all reports and assemblies are consistent in version and build would be to run the Upgrade Wizard.
Regards,
Silviya
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