This is a temporary solution only, but you can try.
Quit Skype. Make sure that you don’t see any Skype.exe processes in Windows Task Manager. If necessary, then stop these processes. Open C:\Program Files\ folder. If you have 64-bit Windows then it should be C:\Program Files (x86)\ folder. Find the Skype folder and then Phone. Right click on the Skype.exe file and select: Send to – Desktop (create shortcut). Right click on the newly created shortcut and select Properties and then the Shortcut tab. In the Target field you will see now: "C:\Program Files\Skype\Phone\Skype.exe" (or with (x86) if you are on 64-bit Windows). Click with your mouse on the text in the Target field and move your curser one space after the last quotation sign and add the text /legacylogin. The text in the Target field should now read:
"C:\Program Files\Skype\Phone\Skype.exe" /legacylogin
Click OK to save the changes. Start Skype using this new shortcut. Can you now login to Skype?
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