Work through these solutions in order. Start with the simplest (disabling real-time protection) and move to the more technical fixes.
or
If the file is believed to be good, your software might be too old to read it. sak decompression failed
Decompression requires working space. If your hard drive is full, the temporary folder (usually %TEMP% ) cannot hold the unpacked data. Similarly, if the SAK is designed to decompress directly into RAM and you have low memory, the operation will abort. Work through these solutions in order
Some SAK files are simply renamed archives. You can bypass the problematic decompression stub entirely. sak decompression failed
If you are the one creating the SAK file and users report this error, the issue is likely your compiler settings.