My Windows IIS service has been getting error about Shibboleth was unable to open and write to native.log
failed to configure logging: exception creating appender: failed to open log file (E:/opt/shibboleth-sp/var/log/shibboleth/native.log).
I have given Network Service group and the i_user account read and write permission to E:/opt/shibboleth-sp/var/log folder. I confirmed that the native.log was created automatically and logs are written on to it by browsing the /shibboleth.sso/status page. However, I am still getting that errors on the event viewer.