Hi All, When we open office 2010 files from web base application it comes up with a auhentication prompt , if we hit cancel on the prompt it opens the file. This authentication never came when we were using win xp with same web base application. If there is any settings by which we can avoid this prompt. We are getting this prompt on few web based application since wehave upgraded all the machines in our environment from xp tp win 7 64 bit and office upgrade to 2007 to 2010. Please help.

Hi, Would you please collect the screenshot for us to verify this issue? Whether this issue only happened when open Office 2010 files? How to capture a screenshot ====================== 1. When the message pops up, please press the Print Screen key (PrtScn) on your keyboard. 2. Click the "Start" Button, type "mspaint" in the Search Bar and Press Enter. 3. In the Paint program, click the "Edit" menu, click "Paste". Then click the "File" menu, and click "Save". 4. The "Save As" dialogue box will appear. Type a file name in the "File name:" box, for example: "screenshot". 5. Make sure "JPEG (*.JPG;*.JPEG;*.JPE;*.JFIF)" is selected in the "Save as type" box, click "Desktop" on the left pane and then click "Save". Meanwhile, you can check whether this prompt is the User Account Control. For your reference: What is User Account Control? Turn User Account Control on or off Hope this helps. Vincent Wang TechNet Community Support

Please see the screeshot above. This prompt never appeared on Win xp woth office 2007. This comes only when we open office files from this web base application. PDF , pictures and other files open fine without prompt We click on cancel and it solves the problem.

Hi, Have you tried the Remember my credentials to check the result? In addition, since this issue only occurs when open office files, you can also try to post in Microsoft Office forum for further discussion. Regards, Vincent Wang TechNet Community Support

Hi, Have you tried the Remember my credentials to check the result? In addition, since this issue only occurs when open office files, you can also try to post in Microsoft Office forum for further discussion. Regards, Vincent Wang TechNet Community Support