keytool error :java.io.IoException:Incorrect AVA format

Solution 1:

Probably you entered illegal character(something like,(comma)) in a field for Name, Organization or somewhere else.

Of course, if you really want some character can be escaped with \ sign

"+" (plus sign) sign also causes this issue. (People often tend to use + sign for the country code field)

Solution 2:

I have faced an error while trying to export a signed .apk file with Eclipse ADT. The error was same like your error. In my case, I used a + sign before the country code. By removing the + sign from this name fixed the problem and allowed me to fully export my signed .apk file. Also, this error can occur when use comma,slash, semi-colon, quotation.

Solution 3:

You tried to use special characters while exporting apk.You can't use these special characters in any field shown while creating the apk. The special character set includes:

• Commas (,)
• Addition symbol (+)
• Quotation mark (")
• Back-slash ("\")
• Angled brackets(< and >)
• Semi-colon (;)

Solution 4:

I solved these Exception by changing the country code:

+91 to India