can some help me to solve the 0x80070021 error


I am new to iis, when I try to access the site, I get the following error´╝Ü

IIS Web Core


Not yet determined

Error Code

I tried to search for similar problems through Google, and tried the steps in the link below, but without success.

HTTP Error 500.19 and error code : 0x80070021

Can some one help me? Thanks in advance.

asked on Stack Overflow Nov 25, 2020 by abbychen • edited Nov 27, 2020 by Xalorous

1 Answer


According to your description and error mesage, it seems something wrong with your web.config.

The 0x80070021 error occurs if the specified portion of the IIS configuration file is locked at a higher configuration level.

I suggest you could refer to below article to know how to unlock the configuration.

How to Use Locking in IIS 7.0 Configuration

answered on Stack Overflow Nov 26, 2020 by samwu

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