IIS 7 and Above
HTTP403 Error caused by server update: August 11, 2020-KB4569746 Cumu...
Last post Oct 15, 2020 06:44 AM by Jalpa Panchal
Oct 14, 2020 10:25 AM|Cathal1|LINK
When the update 2020-08 was installed on our Windows 2016 server we were unable to access a system on the server for a number of days. We encountered the HTTP403 error whenever we tried to access the system. Once we reset the server to a state prior to the
update the access to the system was back. I'm wondering if this was a common problem with this update? What element of the update would have caused the HTTP403 error?
Note: We are not 100% sure whether it was the 2020-08 update, it may have been a previous version. Nevertheless, any info on what could cause a HTTP403 error from these types of errors would be greatly appreciated. Also, access to the system is granted through
Okta Authentication. Would this have caused an issue?
Thanks in advance.
Oct 14, 2020 04:41 PM|lextm|LINK
It is pointless to first focus on the updates, instead of collecting the basic information about such 403 errors via FRT
Dig what FRT says and the culprit should be clear.
Oct 15, 2020 06:44 AM|Jalpa Panchal|LINK
Could you please provide more detail about the issue? you are getting this error on all the sites or any particular site? what kind of site you are using? what your configuration of the site and application pool? are you using an SSL certificate with your
site? what is the sub status code? you will get the more detail by running failed requests tracing and check the iis log for the error sub status code.