Open the article in a separate window

Symptoms: 
After installing, the user cannot activate and receives the following error:  "An item with the same key has already been added.  Key:  Accept-CH".

This is caused by the installer being unable to add critical keys to the machine's registry.

Resolution:
1. Close V10

2. Download this zip folder: https://timetablingmainsite.blob.core.windows.net/files/TDSURLs.zip

3. Right-click to extract the contents, then double-click the extracted file

4. Click Yes and OK to the messages that will appear about adding content to your registry

5. Open V10 and attempt the activation