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i would start by following the directions in that error msg so that you can get a more specific error....
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i would start by following the directions in that error msg so that you can get a more specific error....

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Yeah, thats not helping us. &nbsp;Trying to get them to scan the IIS logs.
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Yeah, thats not helping us.  Trying to get them to scan the IIS logs.

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We at work have a SharePoint 2010 site that we have built. &nbsp;Everything works fine as expected until we change the master page to one that we created. &nbsp;Once we do this we cannot upload documents. &nbsp;We click add new document and get the Generic error page.<br />
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If we switch the page back to the original default master page the issue goes away. &nbsp;Any ideas would be appreciated.<br />
<a href="https://filedb.experts-exchange.com/incoming/2011/04_w17/446575/GenericError.PNG" target="_blank" class="file-inline" title="Generic Error (24 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>GenericError.PNG</a>
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GenericError.PNG

We at work have a SharePoint 2010 site that we have built.  Everything works fine as expected until we change the master page to one that we created.  Once we do this we cannot upload documents.  We click add new document and get the Generic error page.

If we switch the page back to the original default master page the issue goes away.  Any ideas would be appreciated.

Sharepoint 2010 Changing Default Master Page

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.