'JSInterop' does not exist in the namespace 'Microsoft'

[Mohamad Nur Fitri bin Abd halim]

Framework - .NET 5.0; Previous Syncfusion ver.: 19.3.0.59, Upgrade ver: 20.4.0.38

Hi, previously I used old version of syncfusion and all working well. Since there're few limitations to the old version, decided to upgrade version. But I got the error like this:

[BharatRam Harikrishnan]

Hi Mohamad,

Please refer version compatibility document where we have dropped .NET 5 support in 20.1 release.

https://blazor.syncfusion.com/documentation/common/how-to/version-compatibility

Release notes

https://blazor.syncfusion.com/documentation/release-notes/20.4.38?type=all#breaking-changes

Also, check upgrade guide when you are upgrading from one version to another version to know the changes between the versions,

https://help.syncfusion.com/upgrade-guide/blazor-components?current-version=19.3.0.53&newer-version=20.4.0.38&type=BreakingChanges,BugFixes,Features,KnownIssues

Please let us know if you have any concern.

Regards,

Bharat Ram H

[Mohamad Nur Fitri bin Abd halim]

Thanks for your response. 

[BharatRam Harikrishnan]

Hi Mohamad,

We hope the shared details helped you. Please get back to us if you need further assistance.

Regards,

Bharat Ram H