Download was not a valid extension or user script

Occasional Contributor

The version of edge is 85.0.564.63

When I want to install an extension from the microsoft extention store, it always failed and gave the following warning window:

 

屏幕截图 2020-09-28 072412.png

 

I know that this problem also occurs in chrome sometimes, but I searched for it, no good solution to this.

How can I solve this problem?

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