When I try to update my apps, I get the following message:
The disk could not be read from or written to. Please check that the connection to the network is active and try again.
My iTunes media folder is on a Netgear Stora NAS. I have been using this configuration for at least 2 years with no problem. When I try to download an app, a temporary Folder is created in the iTunes Media/Downloads folder but that's it. The download doesn't actually take place. I can update or download apps directly from my iphone or ipad.
I have tried all the recommended solutions I can find online. iTunes diagnostics does not detect any errors. I can write files to the NAS without a problem. I have deauthorized and reauthorized my computer. I have done a complete uninstall and then reinstall of itunes and associated Apple software. Nothing seems to work.