If you are experiencing Error 210 "PatchManifestError_DownloadFail" there are a few troubleshooting steps in the article below that can help resolve this message.
What do I do if I get Error 210 "PatchManifestError_DownloadFail" when trying to download The Elder Scrolls Online on Windows?
Please let us know if this help article resolves the error.
Omg do not do all that up there. Restart your PC, open launcher, check if anything downloads, it should. Your connection to the patch servers probably failed is all.
Otherwise, you can edit the version patch number and force a new download of today's patch. Try these things before you repair and all that! Repair is a nightmare and more often than not results in DL the whole game again!