Here’s how one user describes this problem: This issue could be caused by software or certificate conflicts. In order to fix this sign-in issue, we managed to come up with a series of fixes.

Solutions to fix Skype sign-in certificate problems

1. Delete the sign-in info

2. Flush DNS cache

  Windows 10 Firewall might be blocking Skype as well. Learn how to unblock it here.

3. Make changes through the Registry Editor

4. Perform some troubleshooting steps for Lync 2010 and Lync 2013

If you’re still using Lync, here is how you can fix this problem: If you’re using Lync 2010, delete the personal certificate following these steps: If nothing seems to help, try reaching the Support Center on the official Microsoft web page and let them know about the issue. Let us know in the comment section if you found this article helpful and you were able to fix the There was a problem acquiring personal certificate Skype error. READ ALSO:

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