Error -26601: Decompression function wgzMemDecompressBuffer failed, return code=-5 (Z_BUF_ERROR), inSize=0, inUse=0, outUse=0

The “error -26601 - Decompression function wgzMemDecompressBuffer failed, return code=-5 (Z_BUF_ERROR), inSize=0, inUse=0, outUse=0″ in loadrunner occurs because of insufficient buffer size set in the runtime settings. The Network buffer size is set to 12288 bytes, by default.

In a scenario where user requires to use more than the specified buffer, we encounter the ” Decompression function wgzMemDecompressBuffer failed ” error then ncreasing the network buffer size in Runtime settings> Preferences> Option>General>Netwok Buffer Size. You won't see the error message again