Hi, we have several exchange admins who have been delegated "Exchange Full Administrator" at the organization level yet a few of them are unable to manage the folders. as soon as they click on the permissions tab, they receive an error, "the information store cannot be opened, logon failed, ID no: 80040111-0286-00000000, ID no: c1050000

Hi, First please verify if the public folder store is mounted. Please verify if Microsoft Information Stor services is runing. Pleasea try to use pfdavadmin tool to verify the permission for this public folder. http://www.microsoft.com/en-us/download/details.aspx?id=22427 http://www.msexchange.org/articles/PFDavAdmin-tool-Part1.html Additionally, please try to apply the hotfix and then test the issue again. The information store could not be opened" error message occurs when you try to view client permissions in Exchange Server 2003 or Exchange 2000 Server http://support.microsoft.com/kb/329136 By the way, what is service pack and rollup for your Exchange 2003? Xiu Zhang TechNet Community Support

Hi, First please verify if the public folder store is mounted. Please verify if Microsoft Information Stor services is runing. Pleasea try to use pfdavadmin tool to verify the permission for this public folder. http://www.microsoft.com/en-us/download/details.aspx?id=22427 http://www.msexchange.org/articles/PFDavAdmin-tool-Part1.html Additionally, please try to apply the hotfix and then test the issue again. The information store could not be opened" error message occurs when you try to view client permissions in Exchange Server 2003 or Exchange 2000 Server http://support.microsoft.com/kb/329136 By the way, what is service pack and rollup for your Exchange 2003? Xiu Zhang TechNet Community Support

Hi, How is the issue now? Please feel free to update here.Xiu Zhang TechNet Community Support

its mounted as 8 of the 10 poeple with access can administer the PF's. its just the 2 or 3 poeple that get the error i specified that CANNOT administer PF's

Hi, Please check the steps in my previous posts and update here.Xiu Zhang TechNet Community Support