Windows Server 2008 R2 locking files saved to it via UNC.

Server A is a Windows 2008 R2 machine and server B is Windows 2003 R2 with Crystal Enterprise.
I have setup a job in Crystal on server B to run every night and leave a report output file on a server A share. The next day when I look at the server A share I cannot access the file, when I try it crashes explorer. I cannot even look at the properties of the file.
If I open up my computer and UNC to the server A share and create a file, I can open it from the server with no problem.
OK, so I setup a batch file on server B to copy the file from a folder instead of directly out of Crystal, I still have the same issue. The file copies fine but I cannot access the file it crashes explorer. The file is a 600KB txt file nothing special.
 It seems like there is a file lock of some kind. If I restart the server I can access the file fine. If I change the setup to save to a Windows 2003 server everything works fine with an issue.

What my question is, what in Windows 2008 R2 could be locking this file?
sjacobiAsked:
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sivanovConnect With a Mentor Commented:
HI there, please go to the MS site and get the tool Handle.exe :
http://technet.microsoft.com/en-us/sysinternals/bb896655.aspx

Run the tool agains the name of the file , you will get ouput of all processes wihch keep handles of this file.
the usual suspected is the antivirus app.
good test will be to boot the server A in safemode with netwrok , and repeat the repro - are u able to access the file now?
hope this will help reveal the problem
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sjacobiAuthor Commented:
I was able to find what was locking the file, Thank you.
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