diff --git a/src/common/certificate-authorities/request-system-cas.injectable.win32.ts b/src/common/certificate-authorities/request-system-cas.injectable.win32.ts
index 6eed83f70a..4940aa2a7b 100644
--- a/src/common/certificate-authorities/request-system-cas.injectable.win32.ts
+++ b/src/common/certificate-authorities/request-system-cas.injectable.win32.ts
@@ -32,7 +32,9 @@ const requestSystemCAsInjectable = getInjectable({
        * This needs to be done manually because for some reason calling the api from "win-ca"
        * directly fails to load "child_process" correctly on renderer
        */
-      const result = await execFile(wincaRootsExePath);
+      const result = await execFile(wincaRootsExePath, {
+        maxBuffer: 128 * 1024 * 1024, // 128 MiB
+      });
 
       if (!result.callWasSuccessful) {
         logger.warn(`[INJECT-CAS]: Error retreiving CAs`, result.error);