Please check the following:
Read/Write permissions are set for C:\WINDOWS\TEMP and App_Data folder of your site for the ASP.NET Worker process. Lucine uses temp files in the windows temp folder. Probably when you try to start indexing there are no write permissions over C:\WINDOWS\TEMP
folder. After you granted read/write permissions for this folder of ASP.NET service account, there should not be a problem. The error is thrown by File.Delete Method
. When Delete method is called the code from ASP.NET Framework checks for FileIOPermissionAccess.Write
and in your case the error is thrown, because of insufficient permissions.
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