Hi @Kasireddy, Vinay ,
May I know the version of your report viewer control?
You may using a different release for a try.
As I see, the v150.1404.0 has Improved HTML rendering accessibility for tables.
If you have already used the latest version, you may also test with a lower release for the issued IE is not the newest version.
Here is the release note for your reference.
Regards,
Zoe
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