Did you try to re-download the file?
Did you verify the file with Thomas' gpg key after you downloaded it?
How do you verify with Thomas' gpg key if you don't mind me asking?
You will need a PGP software to do that, you can get it here:
https://www.gpg4win.org/, install it.
After that download the Electrum Installer and the Signature file right next to on Electrum's download page and keep them in the same folder:
Windows Installer:
https://download.electrum.org/2.5.4/electrum-2.5.4-setup.exeSignature:
https://download.electrum.org/2.5.4/electrum-2.5.4-setup.exe.ascOpen Command Prompt as an administrator, to do that just right click Command Prompt in Start>All Files>Accessories and choose '
Run as administrator' and click '
Continue' on the User Account Control dialog box. Or just click start and type
cmd in the search box and right click on the result and do the above.
After that change the path of the CMD to the folder where you have downloaded both the electrum files. For ex. If your downloads are on desktop then type '
cd desktop' or if they're in D drive then type '
cd D:' Or just copy the path of the folder and enter it in front of 'cd' in cmd, ex. '
cd C:\Users\username\Downloads\'
Now just type these commands or copy paste them in the Command prompt:
gpg --keyserver pgp.mit.edu --recv-keys 7F9470E6
gpg --verify Electrum-2.5.4-setup.exe.asc Electrum-2.5.4-setup.exe
It will show a message like, "
Good signature from "Thomas Voegtlin (https://electrum.org) <thomasv@electrum.org>"
And that confirms that the downloaded files are original and not from some malicious website.
If your original problem still persists then it is related to something else, maybe some windows files are corrupted but if you can send and receive funds then I suppose it should be ok, keep back-up of your wallet just in case and do a virus scan on your pc.
