Access project file magic bytes (.adp)
.adp file signature: D0 CF 11 E0 A1 B1 1A E1 | application/octet-stream
Access project file (ADP) is a Microsoft Access format developed and maintained by Microsoft for linking directly to SQL Server databases through Access. It was used to build database front ends, forms, reports, and queries in Microsoft Access, particularly in enterprise and client-server applications. ADP is a legacy format and is no longer supported in recent versions of Access, so files from untrusted sources should still be handled cautiously.
Magic Bytes
Offset 0
D0 CF 11 E0 A1 B1 1A E1
Sources: Gary Kessler
Validation Code
How to validate .adp files in Python
def is_adp(file_path: str) -> bool:
"""Check if file is a valid ADP by magic bytes."""
signature = bytes([0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .adp files in Node.js
function isADP(buffer: Buffer): boolean {
const signature = Buffer.from([0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1]);
return buffer.subarray(0, 8).equals(signature);
}How to validate .adp files in Go
func IsADP(data []byte) bool {
signature := []byte{0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
/api/v1/adp
curl https://filesignature.org/api/v1/adp
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .adp file?
A .adp file is an Access project file. Access project file (ADP) is a Microsoft Access format developed and maintained by Microsoft for linking directly to SQL Server databases through Access. It was used to build database front ends, forms, reports, and queries in Microsoft Access, particularly in enterprise and client-server applications. ADP is a legacy format and is no longer supported in recent versions of Access, so files from untrusted sources should still be handled cautiously.
What are the magic bytes for .adp files?
The magic bytes for Access project file (.adp) files are D0 CF 11 E0 A1 B1 1A E1 at byte offset 0. These bytes identify the file format more reliably than the extension alone.
How do I validate a .adp file?
To validate a .adp file, read the first bytes of the file and compare them against the known magic bytes (D0 CF 11 E0 A1 B1 1A E1) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .adp files?
There is no officially registered MIME type for .adp files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .adp files?
Access project file (.adp) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.