Error: New version 2026.5.17 is not signed by the application owner

When opening the application (Windows 11 Home 26200.8457) the following error is received. Crash report below is from today, but also received a slightly different one on 16th May (Error: New version 2026.5.0 is not signed by the application owner)

Error: New version 2026.5.17 is not signed by the application owner: publisherNames: Dominik Levitsky Studio, LLC, raw info: {

“SignerCertificate”: {

“FriendlyName”: “”,

“IssuerName”: {

“Name”: “CN=Microsoft ID Verified CS AOC CA 04, O=Microsoft Corporation, C=US”,

“Oid”: “System.Security.Cryptography.Oid”

},

“NotAfter”: “/Date(1779433156000)/”,

“NotBefore”: “/Date(1779173956000)/”,

“PrivateKey”: null,

“PublicKey”: {

“Key”: “System.Security.Cryptography.RSACryptoServiceProvider”,

“Oid”: “System.Security.Cryptography.Oid”,

“EncodedKeyValue”: “System.Security.Cryptography.AsnEncodedData”,

“EncodedParameters”: “System.Security.Cryptography.AsnEncodedData”

},

“SerialNumber”: “330001266BFFC0E660AD17007700000001266B”,

“SignatureAlgorithm”: {

“Value”: “1.2.840.113549.1.1.12”,

“FriendlyName”: “sha384RSA”

},

“Thumbprint”: “F21A7ADCDC15946DFE13809941541AB54D75A7D4”,

“Version”: 3,

“Issuer”: “CN=Microsoft ID Verified CS AOC CA 04, O=Microsoft Corporation, C=US”,

“Subject”: “CN=Senary Domain LLC, O=Senary Domain LLC, L=Dover, S=Delaware, C=US”

},

“TimeStamperCertificate”: {

“Archived”: false,

“Extensions”: [

“System.Security.Cryptography.X509Certificates.X509SubjectKeyIdentifierExtension”,

“System.Security.Cryptography.X509Certificates.X509Extension”,

“System.Security.Cryptography.X509Certificates.X509Extension”,

“System.Security.Cryptography.X509Certificates.X509Extension”,

“System.Security.Cryptography.X509Certificates.X509BasicConstraintsExtension”,

“System.Security.Cryptography.X509Certificates.X509EnhancedKeyUsageExtension”,

“System.Security.Cryptography.X509Certificates.X509KeyUsageExtension”,

“System.Security.Cryptography.X509Certificates.X509Extension”

],

“FriendlyName”: “”,

“IssuerName”: {

“Name”: “CN=Microsoft Public RSA Timestamping CA 2020, O=Microsoft Corporation, C=US”,

“Oid”: “System.Security.Cryptography.Oid”

},

“NotAfter”: “/Date(1792702009000)/”,

“NotBefore”: “/Date(1761252409000)/”,

“HasPrivateKey”: false,

“PrivateKey”: null,

“PublicKey”: {

“Key”: “System.Security.Cryptography.RSACryptoServiceProvider”,

“Oid”: “System.Security.Cryptography.Oid”,

“EncodedKeyValue”: “System.Security.Cryptography.AsnEncodedData”,

“EncodedParameters”: “System.Security.Cryptography.AsnEncodedData”

},

“SerialNumber”: “3300000055D9DD692628F9F8E2000000000055”,

“SubjectName”: {

“Name”: “CN=Microsoft Public RSA Time Stamping Authority, OU=nShield TSS ESN:7D00-05E0-D947, OU=Microsoft America Operations, O=Microsoft Corporation, L=Redmond, S=Washington, C=US”,

“Oid”: “System.Security.Cryptography.Oid”

},

“SignatureAlgorithm”: {

“Value”: “1.2.840.113549.1.1.12”,

“FriendlyName”: “sha384RSA”

},

“Thumbprint”: “1D3B54018265BFB6E0595791068E17EC57870DEA”,

“Version”: 3,

“Handle”: 1880842732224,

“Issuer”: “CN=Microsoft Public RSA Timestamping CA 2020, O=Microsoft Corporation, C=US”,

“Subject”: “CN=Microsoft Public RSA Time Stamping Authority, OU=nShield TSS ESN:7D00-05E0-D947, OU=Microsoft America Operations, O=Microsoft Corporation, L=Redmond, S=Washington, C=US”

},

“Status”: 0,

“StatusMessage”: “Signature verified.”,

“Path”: “C:\Users\X\AppData\Local\fontbase-app-updater\pending\temp-FontBase-2026.5.17.exe”

}

at t.newError (C:\Users\X\AppData\Local\Programs\FontBase\resources\app.asar\dist\main.js:2:56409)

at Object.task (C:\Users\X\AppData\Local\Programs\FontBase\resources\app.asar\dist\main.js:2:70763)

at async d.executeDownload (C:\Users\X\AppData\Local\Programs\FontBase\resources\app.asar\dist\main.js:2:327733)

Found the following thread and downloaded newest version (2026.5.17) from your website. From the error message I thought I was already using that version - I guess it hadn’t auto-updated properly? In any case, working ok now :crossed_fingers:

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