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Random Long Delay when opening network files

About 3months ago, I migrated a server from SBS 2003 to SBS 2008. Since then network users have reported that, randomly, a file will be severely delayed when opening. These are files are ONLY MS OFFICE files, other files, like PDFs open just fine.
If the user closes the file that is delayed and then opens it back, it will open instantly.

I am guessing that their are templates or something attached to the MS Office files and it is pointed to the old server name. (timing out) I have checked all template locations on the desktop applications and none point to the old server, it is all local.

NOTE: I have created a DNS record, attaching the old server name to the new server name.

I am looking for some ways to gather more data on this issue or verify my theory. Thanks in advance.
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JP42
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JP42
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khairilCommented:
Hi,

Try use TCP View from Sysinternals. Load the app first and then double click the file you want to open. Have a look on green entry, it will show you the connection happen during that time so that you know where your computer connected during file load.

It might be your office app have slow load. Try put some other document save by Wordpad and rename it to have .doc extension and place that file on the shared folder, then try open that file remotely by using other computer.

BTW, how do you create DNS record? You can maintain both name to the SAME IP address, it will be no problem. But if you create same CNAME or A records pointing to different IP then that can introduce problem.
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JP42Author Commented:
So, because this is a random event, I will need to have tcp view running in the background until it happens?

I created an A record.

Thanks
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khairilCommented:
emm.. my more prefer if you can restart client machine before attempt making next connection, because when it is already open then everything could already cached.

other way to try is to copy that office file to local computer and disable its network after you copy. after that then run that office files, office app should show you something if it cannot load the template or doing links.

other possible thing are the file is being locked by other user, somebody else is opening that file from somewhere else. you can try to make the share read only first for this purpose of troubeshooting. PDF file does not have much issues as most user will open using acrobat reader which means no changes can be done to the document.



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