Yeah mate, just rebuild your block chain... so many people bitching about this..

Step 1..

Run (windows + r)

Step 2 ..

Type in %appdata%

Step 3

Rename Sikka Folder

Step 4

Reload wallet

Step 5 Donate to my wallet for fixing your issue...

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You're Welcome

@sikka

Now, CLI can't open wallets. GUI can't send ( It seems it can not connect anymore)
I created a new wallet, and the new wallet can be opened
But so now how to send coin from old to new wallet?
I have tried with many measures like :Reinstall windows, Delete sikka in roaming folders and sync from scratch, copy to another computer
Not all.
If you say you can handle it
Please inbox me, i also give you Teamviewer ID for you to handle help me