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I would like to confirm the following information with you:
• Which Browser and Operating system version are you using?
• Have you tried to use a different PC/Network environment?
• Have you run Office 365 Desktop Setup?
• Could you please try to reinstall IE10 browser? To check, whether the issue exists.
In addition, make sure that your operating system and software is up to date. There’s a list of all the minimum software requirements located here, and also you might just need to run Windows Update to install the latest patches and feature updates.
Please let us know if the issue still exists, so that we can further assist you in finding a solution.