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rhino:iobitsystemcare [2015/09/14] (current)
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 +====== What are these RHL files? ======
 +> **Comment:​** //When you open an existing file with Rhino, a second file with the same name with an added "​.rhl"​ extension is also created. This **//Rhino Lock//** keeps other Rhino users from opening the file while you have it open.// ​
 +Normally these files are deleted within a few seconds of closing the Rhino file.  If you try to delete them while the file is still open you will get a warning message and the system will refuse.
 +A user recently reported a problem when Rhino is open and the **[[http://​​advancedsystemcareper.html|IObits SystemCare]]** utility is run. IObits changes the file permissions so that Rhino is blocked from deleting its own lock file. 
 +This results in Rhino warning you the file is in use when it really isn't, and these RHL files stack up.
 +He also reported a second cause. Apparently Avast anti-virus has a tool for scanning a file when it is being written. This too was blocking Rhino from deleting its own RHL files.
 +-John Brock 6.15.2011
 +Another cause of .rhl files left on your computer is a Rhino crash. The file gets left behind because Rhino crashed before it had a chance to delete it.  In that case, it is safe to manually delete the orphaned .rhl file.  ​
 +--msh 24.06.2011
rhino/iobitsystemcare.txt ยท Last modified: 2015/09/14 (external edit)