Sharepoint challenge

error ‘ Object reference not set to an instance of an object ‘ appears while trying to access Review Job Definitions page under Monitoring section from central administration. This could be due to faulty timer job. You can find the bad timer by running the following powershell command: Get-SPTimerJob | ? { $_.DisplayName -eq $null }| select name, Id Run below command to delete bad job $Badjob = Get-SPTimerJob <Guid of the job> $ Badjob.Delete() For me the problem job was Microsoft.Office.Server.Search.Administration.CrawlStoreRebalancerJobDefinition & after I removed it the Review Job Definitions page worked fine.  

At times you might see error 403 forbidden or access denied. when you check in sharepoint & IIS, everything is apparently fine. Application pool is up & Site is running. However when you check the permissions on the site Virtual directory under Security tab, you will find that 'Read' permission for 'Everyone' is missing & that is the reason everyone will see 403 Forbidden error while browsing the site. Resolution : right click on Virtual directory folder for sharepoint site from IIS Manager > Go to Properties > Security tab > Edit > Add > add Everyone & assign Read permission. the site should be accessible now. thanks