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If you can’t sign in to Skype due to a disk I/O error, the first step is to make sure you’re using the latest version of Skype.
Download the latest version of Skype
If you still get the error after downloading the latest version, we can help you solve it below. Need to make a call right now? If you don't have time to work through these steps, you can use Skype for Web (Beta) to make calls or send messages direct from your browser. You don’t need to download or install Skype. Launch Skype for Web now. To resolve the disk I/O error, choose your operating system below.
There are two possible fixes for the Disk I/O error. The first is to delete and re-create your user folder. The second is to change the permissions for your temporary files. To delete and recreate your user folder:
If the above solution didn't fix the problem, you may have moved your temporary files to a location outside your profile and are missing some necessary permissions. Try the following steps. Your temporary folder is located by default at C:\Temp, but you may have set a different location for temporary files.
If you’re still experiencing problems signing in, please contact Skype Customer Service.
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